When what you're writing is as tall as the grains growing outside, you know you're done with your first draft. Some teachers want papers to be a certain number of words or pages, but that's silly. You should measure your draft in grains!
Who asked you to write such a tall draft in the first place? Emperor こういち, who wants you to draft up the world's largest book about how great of an emperor he is.
Currently there are no similar looking kanji which exist in the WaniKani learning system