Building a painting wall for large paintings

I had been planning on constructing this painting wall for a few years. My home is the upstairs of a former hardware store (before that a meat market) built in 1932, and the main floor is my studio. It was built for a family business, and so the upstairs is like the home of an  old house rather than a commercial area. There is 24" shelving all round the base of the room, and about 7ft above that is another shelf. I finally figured out how to make myself a painting wall (for large paintings) without taking out the very sturdy and well constructing shelving. Here are some pics . . haven't finished yet. I have to wait for my aunt to come by and hold the lumber and sheetrock while I drill in the screws. I realized I couldn't do it myself. So I must wait until she can come by to help.

I also made a great 4' x 6' table with two hollow core doors and four saw horses. I love it!!!

As I seem to be mostly right brained, I am going to feel very proud that I have constructed this on my own. I don't like working with numbers (I like them in paintings!), so instead of trying to figure it out by calculation (which wasn't working . . have to have a visual), I purchased an 8', 2 x 4, put it up against the shelving, and realized from that what direction I needed to take (won't go into a long explanation!). I will post pics of the completed wall. I have decided to use cradled wood panels instead of canvas for oil painting. It's necessary for oil and cold wax and encaustic, but I'm also drawn to go back to just oil, and this way I can really attack the surface with subtractive techniques. Wow . . that word "attack" is pretty strong! :-)