Please tell me what you think of the the colours, do I need to make them brighter, duller, work more on shadowing, what?

I wanted to work on making my colours brighter, and my shading more notessable, and I wanted to do it on something Stitch related. There is no real point to this picture content. I was doing Stitch's stolen ship, then did Leroy's from the movie box (scanner messed up the colour, was redder) and then figured I'd put the two in it. Stitch is being a butt, and Leroy is pissed.

Stitch's ship is slightly based on a lego design some one made, whitch I'm struggling to find the pieces so I can reproduce it.

I'm happy with this style of colour, Stitch didn't trun out, cause I made the blue too much alike, so lost his paterns. Leroy, and Stitch's ship turned out the best, to me.

I do like the colours of this, but be honest. I'm not perfect, but your words can help me get better.

Leroy, Stitch, and their ships, are © Disney