Might be a good idea to try to explain how your project is different from other more well-known ones that let you practice typing using public domain literature. TypeLit is the one that comes immediately to mind.
Gamified elements for some reason are an incentive for me. Combos when you get long streaks without errors. Can load epubs and plain text. Options for typing letters/punctuation/case. I actually got the idea from typ.ing, but there was stuff that I wanted to see that I couldn't find on other typing sites. Also I kept losing progress which I found to be really frustrating