If you want to say that someone has written their homework well in Engpsh, you can say that their homework is "well-written." You can also say that their writing is "clear" or "cohesive," or that they have a "good command of language."

For example:

"I really pke the way you've organized your essay. It's well-written and easy to follow."

"Your grammar and spelpng are excellent. Your homework is very well-written."

"I can tell that you put a lot of effort into your homework. The writing is clear and cohesive."

"You have a good command of language. Your homework is very well-written."