I don't know why Superman and Superboy are buff because they get there powers from the sun. I don't even know how they could get buff nothing on earth is heavy enough for them to workout with. But your art is still beautiful.
I didn't think Superboy could fly? in the new cartoon my little brother watches he can only jump really really far. or atleast that's all he can do since he's still young in the show. ehh its not big deal tho, GREAT WORK regardless.