Eyes practice

These are looking good so far. I'd say the major thing that is holding your eyes back is that you're not acknowledging the shape of the eye. It's a common trope when you first start drawing eyes to draw this almond-shaped hole in the face where the eye is, but you need to remember that the eyelids are sitting above an orb and also have a certain thickness to them. Try to think of the whole thing as a structure built around a sphere.