We've already had "Need references?
" and "Need textures?
", time for something else. This actually is about references again, but about these more specified ones. Emotions. How many times have you wondered why is that the faces you draw look as empty as dead? Depicting moods can be a very hard task. Try sketching yourself (yes, a mirror would be a nice thing to have in this case), pull faces at diffrent angles, change light. And take a look at these below. Compare.