If you're drawing eyes for the first time, you might find it challenging, but if you keep practicing, you will eventually become a natural. I think that drawing eyes is really fun because they are a really important part of the expression of the character you might be drawing.
I drew this picture of lots of eyes a few months ago. If you look closely at the pupil in the middle eye, you can see that I made the pupil a man sitting down. We had been learning about surrealism at school that day, which was why this picture is so dramatic!