The character design is fantastic! Sola looks like a beautiful goddess. The shoulder is small and looks abit stiff, try drawing it with a bit more of a curve at the neck. a shoulder's size should equal to about three heads in length. (so you should be able to fit around three heads on the shoulder, hair doesn't count though). hands should reach around the waist, yours looks a bit long. hand isn't really proportionate, study your hand to observe the different lengths of fingers. Legs have that curve that goes from outside to inside. I suggest drawing from life, it's the best way to improve your drawing, just draw a of variety poses and try and observe how the body is constructed, how a leg is shaped, after getting good at that, you will be about as good as a professional Since you are already good at drawing hair, eyes and clothes, u just need to work on the body.