Drawing eyes

Every once in a while I'll try and draw a person and end up crumpling up the paper and deciding I'm never doing that again... And then after a while doing the same thing... Over and over again. :P so I decided I'm just going to keep practicing now even if it doesn't look anything like who I'm trying to draw, which seems to be what's happening :P oh well... I'm trying to draw parts of faces by themselves first (or at least as well as trying to draw entire faces, like my tobymac drawing :P) So here are a couple of my eyes along with the pictures I copied them from...