Will this design work?

Just finished the design of my new studio. Hope to start building in a few weeks, just have to sort out a few things reg. the insulation of the room so i'll post a new thread in the construction forum for that. I've not drawn wall thickness etc. here since I'm not yet sure which method to use, but you'll get the idea of how it looks, just hope the walls and ceiling won't eate up all the space. I know walls should not be parallel, but which ones should i modify? What about tilting the walls after the room is built, can this be done in a way with custom shelf with doors? Any comments and suggestions are greatly appreciated.

That looks good mate - the only parallels are the top and bottom wall. YOu could put some angular treatment on one of them. cheers john