We had to do an expression sheet for class. Using Flynn Rider's expression sheet from Tangled. Focusing on the squash and stretch on the face. My teacher (who used to be an animator for Walt Disney World around Peter Pan/Lion King times) really liked this because it's not too cartoony and anime (he doesn't like anime). The only thing he wanted me to fix is the hair. The first one on the top left was perfect and then the others looked flat. Needs a natural hair flow.
Best place for animated inspiration search & reference at "Living Lines Library" [link]