[Twigg]

The biggest thing I can tell you about shading is (even though it sounds super cliche) to look at life and references. See how the light bounces off of things and creates shadows. If you need to, gather references. Seriously, it helps. Even if you're doing a more cartoony style it will help you. I promise.

I did notice you had some, but it was very faint and kind of random. I suggest picking a definite light source and working from that. For instance if the light is coming from the right hand side, the shadows would be on the left. And vice versa.

If you'd like I can find you some helpful tutorials that might illustrate what I mean a little better and give you some visual aids.

Also another big thing I recommend to you is to experiment! Seriously. Go outside of your comfort zone. Try something new! Even if you don't like it you might learn a new technique that can make your art all the more better. <3