I actually thought the art in first game was perfect. It suited the game and gave it an unique feel.
I know how it is when you feel like you are stuck with drawings and you just can't figure out what you want... But if you are not sure about character yet, i'd suggest you to move on other things first (rooms, objects, puzzles) and do character spontaneously later, when you'll get inspired or get some good idea that you'd like.
If you'll bother with details that much in the begining already, you'll burn out.
I know how it is when you feel like you are stuck with drawings and you just can't figure out what you want... But if you are not sure about character yet, i'd suggest you to move on other things first (rooms, objects, puzzles) and do character spontaneously later, when you'll get inspired or get some good idea that you'd like.
If you'll bother with details that much in the begining already, you'll burn out.