I'm the same way~ I doodle during class and my friend gets mad at me because she doesn't think I'm paying attention. Drawing helps keep me focused, otherwise my mind would wander because high school classes aren't that interesting sometimes
Like a human character with no eyebrows? If you look at Pitch in Rise of the Guardians, he has no eyebrows either and yet he can express a lot of emotion. His brow creates a shadow over his eyes which helps get his emotions across. Another thing you had do is change the eyes up, make faces in the mirror and see how it affects just your eyes maybe. If all else fails, shave your eyebrows and use that as a reference.
I don't know if this was at all helpful, but good luck. ^^