Sorry for the delay...it looks fine. I will not be able to say for sure until I get the whole picture. If you want to save the layers than you can go back to an earlier image without maybe having to redo your work as much. Also, you spoke about adding lightning? I guess that will come after the main art.
The pencil sky looks a lot more dramatic than the color sky. So I like the way this looks better, but I looked at the other image first.
The logo will need to be much larger and centered.
The Wizard looks angry not terrifying (to me). The eyes look like they might work. So please go back to the sample images I provided. He can have a devious wicked smile - cold cunning cruel.
Also I would like a facial with the face centered not askew. Good Luck