Character design and drawing are tome-sized topics and even if I had all the answers (I don’t - I have a lot to learn), I’m not sure I could communicate them effectively. I’ve gathered some thoughts and ideas here, though, in case they’re helpful.
First, some general…
Batman: The Animated Series
Title cards, pt.1
All Crime Comics #1-2 cover by Bruce Timm
Dan DeCarlo Sunday Funnies
Aladdin by Glen Keane
Jerry Warshaw. Fling Magazine, 1958
I’m not an artist, but I have more than a few friends who are, so I thought this might be a good thing to post.