Shading in renders is a lot harder than it seems. There's always tutorials on how to make shading, but never on how to correctly place your shadows and lights It's just something you gotta practice at until you get good at it.

Oh even though the advice is not for me, it helps. Because I always wanted to do shading in my renders. ^^

Thank you so much for the feedback, it really helps ^^

To me, it looks like you used the Dodge/Burn tool. If so, maybe you should try some other tactic. If you go to Daesiy on DeviantART, you might try some tutorials from her. She helped me develop my newest shading style^^

The shading is too dark and blotchy. Also, use a different color other than black. Dark blue would work well.

1.) If you did this on photoshop, or any program that has layers, try downing the opacity of the layer you did shading on. (What I do is I copy the layer that the chararcter is on, shade the copy layer, then fade it until it looks more natural.)

Otherwise, it looks like you're in the right direction. (The shading is just a bit too dark.)