Note on WritingALSO POSSIBLE: Some Thoughts on Writing in Various Languages

When you writing in a non-native language, do you think in that target language, o? Or do you mentally translate the words from your native language in your brain?

I believe if I want to be fluent in English, I will need to think in ita target language, it is necessary to think in that language.

NOTE: I have expanded the idea from "English" to any [non-native] "target language." The same idea whether the target language is English, Russian, Arabic, or Spanish.

MY GUESS: For example, I recently found out that subject in a sentence is an important concept in English -- and that is usually explicitly stated in English.

NOTE: In Japanese and Chinese, the subject in a sentence is IMPLICIT --- not explicitly stated.

Of course, we have subjects in Mandarin, but we use them loosely they are implicit: they do not have to be explicitly stated.

And we usually use 'people' as the subject of the sentence, so sometimes I be trapped in my Mandarin brain.

COMMENT: Interesting. My English brain thinks, "which people?" (It is very hard to make universal statements about all humans -- there is so much variance.)

But the sentence could be more concise and structured if I edit it to: ¶
¶
¶
Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity, impressing her guests by transforming leftover vegetables into a vibrant stir-fry.

COMMENT: This is possible. A gender-neutral wording might be better. Some chefs are female. Some chefs are male. A gender-wording might be best.

ALSO POSSIBLE: Although my essay is at the beginner level,re often rudimentary, I strive to writinge more elegantly would satisfy me.

For example, I recently found out that subject iss are an important concept in English (sentences).

When I first read this I was a little confused what you meant by “subject”, so assuming that I interpreted it correctly, adding in “sentences” at the end or even saying “important grammatical concept” might clarify it.
If you wanted to keep “subject” as a singular noun, I would add in “the” in front of it.

And we usually use 'people' as the subject of the sentence, so sometimes I beam trapped in my Mandarin brain.

“Be” as in “to be” would be the infinitive form of the verb, but you would want to conjugate it to “am” to match the subject (I). Or at least I’m assuming those are the right terms (I’m kind of just taking concepts that I’m learning in French and applying them to English).
Regardless, immediately after “I” you would have to say “am” instead of “be”.

She impresses her guests by transforming the leftover vegetables into a vibrant stir-fry.

This is good if you’re talking more about the colours in the stir-fry, as “vibrant” would be used more so with colours.
If you wanted to talk about the taste of the stir-fry, you could replace “vibrant” with a word like “delectable”, “flavoursome” or “delicious”.

But the sentence could be more concise and structured if I edit it to: ¶
¶
¶
Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity, impressing her guests by transforming leftover vegetables into a vibrant stir-fry.

Same note about “vibrant” but that’s all.

Note on WritingMy Thoughts about Writing in a Foreign Language/A Reflection on Writing in English

In your title, would specify that you're writing about writing in a foreign language, more specifically English.

When you write in a foreign language, do you think in that language, or do you translate the words from your native language/mother tongue in your brain?

For example, I recently found out thate concept of subject is an important concept in English.

And we uUsually, we use 'people' as the subject of thea sentence, so sometimes I bewould be/am trapped in my Mandarin bramindset/thinking in Mandarin.

Like howFor example, I translated thea Mandarin sentence into English: ¶
Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity.

She impresses her guests by transforming the leftover vegetables into a vibrant stir-fry.

What is vibrant about the stir-fry? Is it the colors of the ingredients of the stir-fry?

But theThis sentence could be more concise and structured if I edit it to: ¶
¶
, "Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity, impressing her guests by transforming leftover vegetables into a vibrant stir-fry."

Although my essay is at the beginner level, writing more elegantly would satisfy me.

I think that you write with an intermediate level of English in my opinion.

I believethink if I want to be fluent in English, I will also need to think in itEnglish.

For example, I recently found out that "subject" is an important concept in English.

And we usually use 'people' as the subject of the sentence, so sometimes I be trapped myself in my Mandarin brainpatterns.

Although my essay is at the beginner level, writing more elegantly would satisfy memake me happy.

Note on Wwriting

For example, I recently found out that the subject is an important concept in English.

And we usually use 'people' as the subject of the sentence, so sometimes I beam trapped in my Mandarin brain.

Like howThe way I translated the Mandarin sentence into English: ¶
Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity.

But the sentence could be more concise and structured if I edit it to: ¶
¶
Using whatever ingredients she has on hand, the resourceful chef prepares a delicious meal with ingenuity, impressing her guests by transforming leftover vegetables into a vibrant stir-fry.took the time to edit it. ¶

AlthoughI acknowledge that my essay is at the beginner level, and writing more elegantly would satisfy me more.