first off, your anatomy is PERFECT. WOW. ITS SO GOOD 
. but here’s some things i think you could practice on.
•hair colouring
•don’t be afraid to use darker shadows, it really gives more dimension to your character.
•please avoid using pure black and white!! instead of your black line art, try a dark, duller red. and instead of white, use a slightly yellowish white.
you’re on the right track, i can’t wait to see more from you!! <3