No matter how much workroom space you have, you always wish you had more, right?
I'm very lucky that in addition to my workroom space, I also have a L-O-N-G hallway, and I use the wall for drafting. Recently I've been drafting those arched swags I mentioned yesterday.
I leveled the frame on a workroom stand and taped out the shape, reference points, and hung plumb lines.
I taped gridded paper to the wall and traced the outlines of the swags.