Those early sketches looked too cartoony; I really wanted to do detailed drawings - I was taking anatomy classes - but unfortunately I wasn't able to do it because of the time element. ↗
The rest of my work, besides sketching and keeping a diary, which was the most troublesome of all, consisted in making geological and zoological collections. ↗
Well, I get my subject on Wednesday night; I think it out carefully on Thursday, and make my rough sketch; on Friday morning I begin, and stick to it all day, with my nose well down on the block. ↗