I'm currently working on anatomy.
As an artist you're going to be saying that for the rest of your life :P
I love the render you've done on both eyes, but the top one is really cool like cat eyes. I tried to draw a cap the other day and realised how difficult it was, so well done on drawing it at all (I gave up). Maybe the angles a little wrong but since I failed I cant tell you how to do it better :P
On the top one though, it looks like you ran out of space? if you used digital, maybe drawing with a larger canvas, or zooming in more might help. You can always trim any unused space afterward. Unless its a traditional drawing in which case, oh well :P
Since you're working on line art, try and use stronger longer lines so it doesn't give that sketchy feel.