I would be happy,not mind if you‘d change my whole sentences around to sound more natural. I would not mind if you‘d change my whole sentences around to sound more natural.

I would be happy, if you could change my wholeentire sentences to sound more natural. I would be happy if you could change myentire sentences to sound more natural.

はい！

I would be happy, if youFeel free to change my whole sentences to sound more natural. Feel free to change whole sentences to sound more natural.

I'm going to write about "handwriting" today. I'm going to write about handwriting today.

I'm going to write about "(")handwriting"(") today. I'm going to write about (")handwriting(") today.

ここに” ”を入れる必要はありません。

I'm going to write about "handwriting" today. I'm going to write about handwriting today.

Handwriting is a normal English word so I wouldn't quote it here. I would only put it in quotes if you were quoting something else that someone said, or if you were being sarcastic (about whether something can be considered handwriting at all), or if the term is special or unfamiliar to your audience.

When Iyou see another person’s handwritings, it sometimes, they feels heartwarming. When you see another person’s handwriting, it sometimes feels heartwarming.

When I see other's handwritings,they sometimes, they feel heartwarming. When I see other's handwriting,they sometimes feel heartwarming.

When I see others handwritings, sometimes, they feel heartwarmIt feels heartwarming to me when I see other's handwriting. It feels heartwarming to me when I see other's handwriting.

My friend is smart and work wellhard, but his handwriting isn't really bneautifult. My friend is smart and work hard, but his handwriting isn't really neat.

「neat handwriting」はよく使われます。

My friend is smart and work wellis a hard worker, but his handwriting isn't really beautiful. My friend is smart and is a hard worker, but his handwriting isn't really beautiful.

My friend is smart and work welldoes good work, but his handwriting isn't really beautiful. My friend is smart and does good work, but his handwriting isn't really beautiful.

"Works well" here is usually used to describe a machine or a technique that is very effective. You should instead say "does good work." Note that however you can still say someone "works hard" or "works quickly." Just "works well" has a very specific connotation.

(Just between you and me) When I seeaw his handwritings for the first time, I was a bit surprised, but they. His handwriting gave me the warm and fussyzzies. (Just between you and me) When I saw his handwriting for the first time, I was a bit surprised. His handwriting gave me the warm and fuzzies.

(JThis is just between you and me) , though.) When I seeaw his handwritings for the first time, I was a bit surprised, but when they gave me warm and fussyfuzzies. (This is just between you and me, though.) When I saw his handwriting for the first time, I was a bit surprised when they gave me warm fuzzies.

(Just between you and me) W, when I seeaw his handwritings for the first time, I was a bit surprised, but ithey gave me a warm and fussyzzy feeling. Just between you and me, when I saw his handwriting for the first time I was a bit surprised, but it gave me a warm and fuzzy feeling.

If a person is perfect like a robot, he or she isn't attractive, is i. Right? If a person is perfect like a robot, he or she isn't attractive. Right?

If a person is perfect/flawless like a robot, he or she isn't (that/very) attractive, is itare they? If a person is perfect/flawless like a robot, he or she isn't (that/very) attractive, are they?

If a person is perfect like a robot, he or she isn't it's kind of unattractive, is iright? If a person is perfect like a robot, it's kind of unattractive, right?

I feel like if people show us a side that is not perfect, then it make them look more attractiveare more attractive when they show their imperfections. I feel like people are more attractive when they show their imperfections.

I feel like if people show us a side that is not perfect, then it make them (look/seem) more attractive. I feel like if people show us a side that is not perfect, then it make them (look/seem) more attractive.

I feel like if people show us a side of them that is not perfect, then it can make them lookseem more attractive. I feel like if people show us a side of them that is not perfect, then it can make them seem more attractive.

Another good word here is "humanize." It is a good counterpart to the description you gave earlier (like a robot, robotic). Their imperfections humanize them.