when should revision happen in the writing process?\no after you have written a first draft\no halfway…

Brief Explanations:

Revision in writing can occur at multiple stages. While it can be done after a first - draft to improve the overall structure and content, it can also be done anytime during the writing process when the writer feels the need to adjust ideas, clarify statements, etc. Receiving feedback is also a common time for revision, but it's not the only time.

Answer:

anytime you need it