[Saphira777]

my shading is horrible -.-
anyway, I'm experimenting with opacity and smoothing. any tips?

[cab223]

you should use the blur tool and blur out all the edges is the shading.

[Saphira777]

Editted.
I also changed the jaw and added some light highlights.

[LordGhoul]

A good tip I can give you: Look at other peoples Art, and at real photos and look at the shapes, the bones ect. Like studying the animal, that's what I always did. And than just practice alot and find your very own style.