Drawing guide of hands and fingers

Actually, every artist draws differently, and I think that's nice! For example, Camila only draws four fingers, this is her own choice and I think it's nice. So I mean please don't restrict yourself. Because it is not necessary to follow the rules and methods while drawing or making art. Never limit your imagination. But there are still certain techniques for drawing hands and fingers. I will try to show you these techniques. Hope it helps. Also a little suggestion, reference your own hand.