My friend Jimena and I have a lot of things in common, f. For example, we like dancing, journaling, and we also enjoy reading books.

I saw someone else erased your last comma here. Basically, in American English you keep the last comma, but in British English they don't use commas to separate the last thing in a list.

For example, she's used to likes reading romance books and I like reading books about the brain or learning techniques, but there is a comic called “True Beauty” that both of us liked.

She feels uncomfortable whilen she tries to draw because the drawing doesn't result aslook the way she wants.

Compared to me, I'm not used to don't feeling the same way when I draw.

Although we both makedo mind mapping for academic purposes, there are some activities we don't share in common.

For instance, she watches movies and I don't, and I sew clothes, but she doesn't do it.

The most marked difference between us wais probably musical tasteour taste in music, since I don't like banda, but she likes it.

Or "music taste"

I was taught that when a clause has less than ~5 words, you don't need a comma after it. "I don't like banda," is pretty short, so I took away the comma. If you really wanted it, you could keep it. Just make sure your writing doesn't have so many commas it becomes cluttered.

My friend Jimena and I have a lot of things in common, f. For example, we like dancing, journaling, and we also enjoy reading books.

There are, however, certain differences between us.

For example, she's used to likes reading romance books and I like reading books about the brain or learning techniques, but there is a comic called “True Beauty” that both of us liked.

She feels uncomfortable while she tries to draw because the drawing doesn't result asturn out the way she wants.

Compared to me, I'm not used to feeling the same way don’t get that feeling when I draw.

Although we both makedo mind mapping for academic purposes, there are some activities we don't share in common.

For instance, she watches movies and I don't, and. I sew clothes, but she doesn't do it.

The most marked difference between us wais probably musical taste,our taste in music, since I don't like banda, but she likes it.

My friend Jimena and I have a lot of things in common, f. For example, we like dancing, journaling, and we also enjoy reading books.

For example, she's used toually readings romance books and I like reading books about the brain or learning techniques, but there is a comic called “True Beauty” that both of us liked.

Even though we both like sports, her favorite sport is flag football, butand mine is basketball.

She feels uncomfortable while she tries to draw because the drawing doesn't result as(come out like / look like what) she wants.

(Compared to me,) I'm not used to don't feeling the same way when I draw.

Although we both make mind mappings for academic purposes, there are some other activities we don't sharve in common.

Or "both do mind mapping"

I would remove this sentence, or put it at the beginning, since it isn't like the other contradictions between you and your friend here.

For instance, she watches movies and I don't, and I sew clothes, but she doesn't do it.

There's one musical genre that we both like: kK-pop.

Although we both like boybands, these differ a bit too: she likes BTS and I like VIXX.

The most markedbiggest difference between us wais probably musical tastes, since I don't like b(the Mexican musical style) Banda, but she likes it.

A lot of people won't know this style of music, so I added to the sentence.

My friend Jimena and I have a lot of things in common, f. For example, we like dancing, journaling, and we also enjoy reading books.

The period between "common" and "for example" isn't necessary, but it is very helpful - sentences which are separated into many pieces by commas can be difficult to understand.

For lists of items, you need "and" before the final item. "dancing, journaling, and we also enjoy reading books" isn't a list of three things - it's a list of two things ("dancing and journaling"), joined to a separate clause by "and". "We also enjoy reading books" isn't a noun like "dancing" and "journaling", it's a full clause with subject, verb, object. The actual list as written is then just "dancing, journaling", so you need "and" before journaling. This would give "We like dancing and journaling, and we also enjoy reading books". This is grammatically correct, but there's no reason to repeat that you like (or enjoy) things. You can combine it all into one clause and it is easier to read: "we like dancing, journaling, and reading books".

For example, she's used to reading romance books and I liked reading books about the brain or learning techniques, but there is a comic called “True Beauty” that both of us liked.

"She's" is possessive. Nothing is being owned here, "she" is just the object of the clause.

"Used to" goes with infinitive, not present progressive. Note the presence of "to". You can say "used to read" or "were reading", but not "used to reading".

"Like" should be "liked" to keep the tense consistent (so everything is past tense).

Even though we both like sports, her favorite sport is flag football, butwhile mine is basketball.

This is subtle, but "both" is necessary because you are drawing a contrast: "even though X, Y". Y should contrast with X. "her favorite spot is flag football, but mine is basketball" doesn't contrast with "we like sports", it fully aligns with it. The "both" creates contrast: we BOTH like sports, but we do NOT both have the SAME favorite sport.

"But" to "while" is extremely subtle. Many English speakers would not notice the difference at all. However, "while" is slightly more natural here. The reason is that you essentially have two pieces to this thought which contrast: "we both like sports", and "we have different favorite sports". "But" most naturally separates these two separate, contrasting ideas: "We both like sports, but we have different favorite sports" (of course in this case you can't use "but" in that position in your sentence for syntactic reasons: "Even though X, but Y" is not an English construction). "While" on the other hand can be used to address distinctions within the individual ideas. "We both like sports, but we have different favorite sports - she does X while I do Y". Some other examples:

John and I are best friends, but we don't always agree. He prefers chocolate, while I prefer vanilla.
Although Billy and I agree on most things, he is a liberal conservative while I am a socialist.

Although this is preferred in writing, it is not a big deal.

We both like languages as well, but she likes Italian andwhile I love French and Japanese.

You have used "but" in the most natural way here, to set up contrast between the two separate ideas: "we are similar in this way, but we are different in another". "While" is then more natural as part of the second idea, because it implies more contrast than "and" does.

She feels uncomfortable whilen she tries to draw because the drawing doesn't resulturn out as she wants.

"While" implies the drawing is on simultaneously with some other event. You could say "when she tries to draw while tired, it never comes out right". You can't say "while she tries to draw, it never comes out right".

Using "result" directly as a verb in English is relatively rare. When you are talking about an act of creation, much more common is "doesn't turn out" or "doesn't end up" rather than "doesn't result". "Result" as a verb is generally an action done by a noun which appears. For example, "dangerous driving conditions may result".

Compared to me, I'm not used toIn contrast, I don't usually feeling the same way when I draw.

For "compared to", you need to say "compared to me," followed by something isn't about you. "Compared to me, I don't feel the same way" sounds like you are comparing yourself to yourself. I used "in contrast", but you could also use "on the other hand", or "In comparison,"

"I'm not used to feeling" implies that while you are not familiar with a feeling, you are experiencing it right now, or expect to soon. "I'm not used to feeling this sad" or "I'm not used to staying up all night".

Although we both makedo mind mapping for academic purposes, there are some activities we don't share in common.

"mapping" is a (progressive) verb. You can MAKE mind maps, or DO mind mapping, but you can't "make mind mapping".

For instance, she watches movies and I don't, and I sew clothes, but she doesn't do it.

"Do it" is redundant and doesn't sound natural.

The most marked difference between us wais probably musical taste, since I don't like banda, but she likes it.

Everything else has been present tense, so "was" should be "is"