Room for recording vocals

Hello!

So I tried to pitch to my mom about hanging up a blanket in my room but it did not work. She said that she doesn't knock me for covering, but she just doesn't have much stock in it and this house is all she has. To put it simple, she doesn't want anything nailed or glued to her walls so she suggested that I move into the backroom. It's a bit smaller and the ceiling is flat unlike my bedroom right now that has like a castle roofing.
   
The ceiling is like the equivalent of a small house and pretty high. I'm only recording vocals and mixing, I'm not playing any instruments.
 

 
The screenshot above is of the newer room I'm planning on moving to since it's a lot smaller, the ceiling is lower, the flooring is carpet, and the walls are a bit more proportionate.I believe itll be better because my room right now has a kind of airy reverb . Now just so I don't have to repeat myself later on: I cannot buy acoutic panels, hang up blankets or anything. My mom is ex military and the word "no" is her catchphrase; I have a reflector shield connected to my mic stand and that is all, but other than that I feel I may get cleaner recordings in the back room.

My bed and everything will be moved to this room since the doggies need somewhere to sleep too just to be fair. So is this move to the new room a good or bad choice?

Thank you! Well she said no hanging up whatsoever and the back room has less of a revern than my old bedroom. My brother used yto have that room and he liked it cause it was quiter, especially since it's in the back of the house, rather than the front(which is connected to the bathroom)

Thank you but as I said,before I can't hang anything on the walls. Tried convincing her but she cares about her house

then get one of these:
 

 
http://www.monoprice.com/product?p_id=602650

batsbrew
then get one of these:
 

 
http://www.monoprice.com/product?p_id=602650

Uhhhhh she has one. It's in her first pic in the OP.

A less reflective room is often better for recording audio, because it's easier to add reverb than remove it. The Transient Shaper that comes with Sonar is pretty effective for reducing reverb, just adjust it so the reverb tail gets cut down. A noise gate or expander can be useful as well, but if there's lots of reverb gating can sound like Phil Collin's drums from the 1980s. An effect that has its uses but possibly a bit much if on every vocal line.
 
I'd probably go for the smaller room with the carpet, but without hearing both it's difficult to say. Clapping your hands in a room is useful if you want to hear how it reverberates.
 
Controlling room reverb can be tricky. Thin absorbers like blankets or even thin acoustic tiles are really only useful at dealing with treble frequencies. Egg boxes, packing foam and similar do nothing at all. If your mother won't let you attach anything to the walls, might she accept a free-standing screen as OK? You can buy them but if they're any good they're heavy and expensive. But it's easy enough to build a cheap and effective one using a simple box frame made of timber with heavy sheet rockwool (the stuff used for insulating houses) in it with the whole thing covered in hessian to stop the fibres escaping.
 
You could then stand it somewhere a few inches from a wall or prop it across a corner of the room and record with your back to the frame and the mic reflection screen you already have on the other side of the mic to catch anything coming in from the other end of the room.
 
You might find these useful - https://www.soundonsound.com/sos/dec07/articles/acoustics.htm
http://www.soundonsound.com/sos/oct10/articles/qa-1010-2.htm
https://www.youtube.com/watch?v=spg4y5_zsMs (video tutorials for building a frame for rock wool)

If you do have money to spend, you could always think about an isolation booth....

http://www.clearsonic.com/IsoPacs.htm