I started with the basic plans and dimensions, then made it my own from there. I added a center shelf, used regular (cheap) hinges and a removable brace instead of the shelf brackets, with stop blocks on the brace cleats to help easily center them. Added 2x4s on the sides to mount the hinges and let the wings fall flush, 2x4s on the bottom to mount 4” casters, 1/4” plywood backing, and 1x3 trim on the front for aesthetics and as a lip to hold items in place. The backing completely covers the lower shelf, and I left a gap to run cables through in the upper shelf backing. Velcro strips on the back hold the wing braces when they’re not in use. Even though it’s plywood, I sanded everything thoroughly to reduce splinters and snags.