I'd quite like to see those sketches, I remember someone posted one of Bulbasaur earlier in the thread, and it was interesting to see. Let me know if you do sketch any out, I'd very much like to see them.
Here's a question, what is it that causes Solrock and Lunatone to levitate? They don't have wings, or jet propulsion or anything, so what's the deal?
A simple explanation would be that it is connected to their typing as Psychic. As shown with the Abra line, Psychic types have levitating properties. Not to mention both of those Pokemon have the ability Levitate.