> improve the legibility of my work.

Nitpicking here in a way that I would usually avoid, but it is relevant to the conversation being had and it seems like you might appreciate the information... "Readability" would be the more correct word to use here instead of "legibility".

Legibility is close enough for me to know what you mean based on the context, but it really applies to the visual presentation and how easy something is to read at a symbolic level (whether someone's handwriting or font choice is good or bad impacts legibility, whether someone uses good grammar or not impacts readability).