Just finished the construction part of the studio a few days ago. Added the DIY door handle to the DIY 4.5" door. Made another 2 smaller panels...and a friend made me a cover for the piano. I did take video footage along the way, and now in the process of editing and putting together ....to be uploaded to YouTube soon.
I only hired out for electrical and AC installation. Everything else was done between my contractor uncle and me pretty much.
Internal size: 18' x 19' with a cathedral ceiling peaking at about 13'.