There isn't enough eyelashes on the bottom part of the eye, the eyelid is too low on the eye and the eyebrow should be more thick where it attatches to the nose. Try doing more shading on the inside of the eye around the edges and think about making the line of the nose less curvy and less distinct. I like what you have done iris but it is actually more large on the eyeball in real life. Good job adding the area at theleft side of the eye! Most people forget about that! Try making it a little smaller though. Try adding more shading. 10/10 for effort! Good job and keep improving!
There is something about how you drew this eye that makes it look more like a cartoon drawing and not realistic. The eyebrow looks scribbled in, not well worked on. Look at this eye and you can see the difference. You shoudl draw more eyes and then see how they come out, I think it might be the pupil. Keep trying but I don't think you put enough effort into this. I try going on youtube and seeing how they draw realitic eyes, it actually helped me improve a lot better than before. You should try it, I am sure it will work. [link]