Ok you have good concepts, but your spriting could use some work. Some of your eggs lack depth, and they have no apparent light source coming off of them. I could sit here an critique all day, but I'm not supposed to be on the computer right now. So, here are some of my eggs.
Look at how there is a light source coming from the top left, and also note how the colors don't drastically change whit the shading, it looks smooth. I made the outlines black though and that's why the outline looks all messed up
Keep practicing though
I'm looking forward to seeing more.
EDIT: Should this be in Art Base? I'm not sure