Remember that the eyes are round and there are parts that make all the prettiness you're trying to capture.
When you look from the side, it helps you appreciate that the pupil is a hole and that the iris is UNDER a clear little dome that catches light differently than the rest of the eyeball. Your pupils are pitch black since they are literally holes. After I make the iris with some softness, I use a hard brush and make the pupil nice and sharp.
Also, unless there is a light in the eyes, the pupils aren't that contracted. (Here's a body language tip: Tiny pupils mean you don't like what you see. If you want to make someone (especially a woman) look attractive, then the pupils are larger. She likes what she sees. They actually do this to eyes in magazines to make the women look better. Tiny pupils make the viewer feel she hates them and they are put off by her.)
Look at real eyes in magazines and draw them. You'll notice a lot of things that you're not quite getting in this image. Doing studies are the best thing you can do when you want a hint of the real world in your art.