It looks awesome... quite good as you're a beginner. When I was a beginner, my first recolor looked awful!
Anyways, you can perhaps make the darker parts dark with the lighter parts light. That'll make it look like shading. You should also save the picture in P.N.G folder, as I can see you've used JPEG. P.N.G folders are much easier to recolor.
Everything else is good. You've done a pretty good job! 9.5/10