Everyoune said this but I'll repeat it "WOW", I didn't expect this when I've oppened the image. Best thing here is an idea, everything else is just good execution. :) And in my oppinion you don't need that white pixel in the bears eye, cause so many similar thones one after the other, reminds me of pillow shading. And maybe back of the bears head should be the light blue you used in his hands for shadows. This is just nit picking this is really great. :)
Thanks!
I am very agree with you about my colorings, since I am veeery new to pixels, I'm still finding the perfect color palette! Needs more practice! :D