have any of u guys ever built a cage for a cham with a rocky rear wall? im building a cage for mine right now, and its going in the living room, so it gota look outstanding

i m planning on makin a rear wall(the styrofoam technique) and i wanted to see if any of u guys know any techniques on how to do it, also i mostlikely will make a built in waterfall in the wall, so he can drink all he wants, no need for dripper, and will keep up the humidity.
thanks in advance
igor