The Idea is fine, but there is a lot of things you can do better abouut this drawing.
First, figure out your proportions.
Second, pick a better skintone for wonder woman, it seemed more like snow white to me.
Third, a plain white background can be distracting and it would be nicer if you had something else to make the character pop. With that skintone it kinda makes her become to background to be honest.
Fourth, you don´t have to be all chickenscratchy with the hair, a more soft brush would work better.
Fifth, don´t get sloppe with the linework, a little thickness would be nice, and try not to get chickenscratchy. It helps zooming out.
Sixth, dont get sloppy with your description either... I guess that is just me though :P
Anyways keep practising, keep drawing and you improve on these mistakes and make better and cooler drawings and paintings in the future. I know you can do it. :D