So I have an old version of this in another chapter of this book, you can go back and look at it if you want. 

But I didn't really feel satisfied with it, so I showed it to my older sister and asked her how I could improve it. 

She had me move the stick of the little slime, change the color of the lines on his face and shirt, and make the shading more noticeable. 

Personally I think it's much better