Thanks guys! I was thinking of building a deviding way to create a control room, but I gave up on that because theceiling is slanted.. I was actually thinking of moving my rig in the "bedroom" area (Not the top right corner, but the bottom one).
slanted ceiling is desirable, anything other than a cube is desirable. it's common sense, imagine a sound source dead in the center of a perfectly cubic room... the source disperses sound at a right angle against any of the surfaces, and every reflection bounces back and forth passing through the center again, infinitely. this is flutter, the faster the flutter the smaller the room. as soon as an angled wall or ceiling is introduced, the sound is diffused and sent off on a non-recursive path. itt'l still be bouncing off the surfaces without treatment, but itt'l atleast be bouncing all over the place instead of back and forth through the same vector. this is the fundamental concept of diffusion, as opposed to absorbtion, where absorbing is just eliminating the reflection entirely. diffusion is more desirable in a live room where some ambience is desirable... in a mix room, you're more-so after absorbtion of everything so you get a pure image of what the speakers are putting out, but ... anythings better than a cube full of standing-wave.
look at any high-end commercial mix room, the best will have odd walls with tons of angles, and a tiered ceiling with dangling hard surfaces.
one of the oldest tricks in the book for diffusing flutter in a drum room is hanging pallettes on the wall. (like industrial pallettes that crates and cargo get stacked on.)
obviously that shit ain't gonna absorb anything, it's just gonna scatter the sound off in every direction which creates much smoother more desirable ambience.
sorry, went off a bit there... i'm wired outta my skull