Wall treatments “Asymmetrical”?

Great feedback from everyone and I appreciate it.

I ordered the Floyd E Toole Book Sound Reproduction and will start it when it arrives.  I watched the noted YT video and there is so much info I will have to rewatch a few times to fully understand.

I have about 200 hours on my Sabrina's but need to dial in the room. GHDprentice, I like the idea of using pillows and blankets to simulate what expensive panels may do. I will start by moving my sub around as well to see the impact that has. I need to get the bass right as was mentioned to build from that foundation.  

I will post system this weekend in the virtual system area that was mentioned

Thank you all.

If you can, get a test record and sound level meter - it is very useful in setting up your bass, especially when you are trying to blend in a subwoofer and selecting a listening position. Bass nulls and nodes can be killers! :-)

Any recommendations on a Meter or test record? Thank you

FWIW, I used a Stereophile Test CD 002-2 and a Radioshack SLM. Pretty straight forward, but unfortunately ’out of print’. You may find them used however. I’m sure there are probably others, used or new. Try eBay and Google if all else fails. On the subject of test CD’s, I also used ’The Sheffield/XLO test and burn in CD’ for set up and to really drill down imaging with a super CD, "Test Record 1" by Opus3. It came out on CD but I preferred the LP (or maybe I just liked my system). If your system is maxed out image wise you will be bowled over by the holographic image. A lot of different cuts from a bunch of Swedes in a perfectly mic’d set ups. Give you something to work towards. Probably have to get these on E-Bay.(?).

I’ll start searching and watching Yt videos on how to use a meter like that. Sounds like a fun project. 
thank you Newbee