Made it less bright

What you have now is very dull looking. Since it's pokemon I would expect some bright colours and some saturation. At the moment Dragonite looks kinda glum, and the colouring helps convey that. Nothing wrong with it really, but make sure that's the way you wanna go with it if you are.
I think you're gunna need another shadow colour, a buffer shade to help add some more definition to those shadow areas. For instance, under the arm everything is merged together in one shadow colour blob. The grey on the belly is the same - very undefined. Also it's far too dark to be dithering the lines against the cream colour - it adds texture rather than fading.
You have some bad outline issues at the moment, where dark pixels are dotted around with no real form (the 'horn' for instance, and the top of the tail).
You've got a solid sketch atm, now you've gotta refine it.