Art trade: Liam

One down
more to go
idk
I'm not happy with this at all really. I like how I drew him but the coloring. :/ I think I'm getting worse with each one of these I do.
Anyone know of some digital sai painting tips or tutorials? (oh god please don't bombard me with the coloring looks fine comments ok)

But yeah character belongs to
I actually find humans really enjoyable to draw now dljkdld
Liam has powers he can float, but every time I tried doing something to show he was glowing it looked ghetto so I left it out. x) I love Iam-kun even tho I make fun of him a lot.