I would be better for your outline if you used a second layer for the color or the "paint under" and "paint over selection" mode for your brush.
Your composition ends being crammed / tight. Try leaving some negative space.
unfitting music is unfitting, that said, you did a good job in spite of using shitty tools
Now ill give you 3 star because you did this on the Pc and its not easy it kind of looks like link. Great song tho 0.5 for that pick