Have you seen some of Coshi-Dragonite or Cotton-Gravy's stuff? They're pretty good pokemon artists on there. There's more but I remember them.
What you could try and do is make your MSPaint drawings better by downloading GIMP which is sort of like the free alternative to Photoshop. Then it might be easier for effects and shadows and stuff.

Might be worth a try if you want to keep drawing.