Thanks Glenn, and everyone! That means a lot!
Here are a few pictures of my diffusers. I used this design on the following website to build them.
HiFi Speaker Design © mhSoft <%=year(now())%>
They are 18 inches by 18 inches. Used 3/8 inch plywood for the backing and 2x2 pine for the pieces. I used wood glue to glue each piece in the backboard by hand. On my back wall, there are 8 of these 18"x18" panels, all next to one another.
As far as the cloud design above my drum kit, I just winged it on my own. Like I said in the previous post, I used pine for the wood, 1"x6" for the frame. I already had OC 703 2 foot by 4 foot 2 inch thick panels wrapped in burlap. I placed three of these 2 foot by 4 foot panels side by side and measured the outside dimension and built the frame to that size. Once the frame was built, I stained it, then marked where the seems of the OC 703 fell and smaller pieces of pine strips across the frame for support. I then corner cut at a 45 degree angle 4 pieces for each corner. Then to help support the panels on both sides, I cut out 2 small block shaped pieces. The strips, corner pieces and block ends were nailed into place with my brad nailer. Then I determined where I wanted the cloud (above my drum platform) and found the ceiling joists with a stud finder. Making sure that the located joists would match up with the frame, I screwed in 4 course thread heavy duty hooks. Then on the frame itself, I screwed in 4 heavy duty hooks to perfectly match up with the ones I put into the ceiling. Then I took 4 heavy duty turnbuckles and hung them by the hooks in the ceiling. I then picked up the frame and hung it from one end, then the other. Done with mounting. Then finally, I took my 3 2 foot by 4 foot pieces of OC 703 and placed them into the frame from the top. Then doubled up on the 703 panels to make the entire cloud 4 inches thick. All said and done, the absorption surface area is 4 feet by 6 feet. That makes the frame slightly larger than that size to accommodate the panels on the inside portion of the frame. It stands about 10 inches down below the surface of the ceiling and works fantastic for a drum cloud above the kit.