Just gonna crit your colourusage here. You are being rather wastefull. 59 colours without transparency.
The main problem is that you are going 'hair is blue, skin is skincolour and some blush and i need extracolour for the eyeshadow aa as well' and so on.
Having ramps which mix and intersect makes a picture look less sterile and more looking like a whole instead of seperated pieces.


My edit is VERY all out. It has 16 colours and trans. With 32 colours which is still almost half what you have atm you could have it way closer to your original in terms of colours and at the same time could pull the whole picture together a bit more.
You seem to be on a good way.
