I would say, all over, that it needs more contrast. You are picking too many colours too close to one another. So, it's taking you longer to get that contrast. I would focus on the inside of the hat as well, making it much darker.

Lastly, that staff needs more work too. Make that wood look grainy. Give it more texture. Also, make the orb more shiny. Maybe even add a glare?

I love his hat! Nice job.

This is cute, I like it ;).  Can't find anything really wrong with it, so that's as far as I'll go.  OR IS IT!?

I like this alot.  I'm not sure why, but it's awesome.  I showed it to my little brother, he likes it too.

It might just be me and my monitor, but I think you need a bit more contrast between shades. It also seems pillow-shaded to me.