That's really cool, looks so pop art-ish

Maybe remove the whole background and put the whole background with dark colour ?
Or even rainbow colour

new pic in OP

Very interesting. Reminds me of Gorillaz art.

Try to get all the regular skin covered by the paint. mainly in the scalp region.

cool lookin stuff, got a fetish for simple looking art.

all i got is that
i don't really understand how the shadow on the neck in the first image does that, what's the small circle of light getting through from?

idk , i thought'd it look cool.