I cut three posterboard circles using the paper pattern I traced from the seat piece.

Then I cut the fabric circles 1/4" larger, trying to keep them oriented the same way so they would look alike.

I ran a gathering thread around the edge of each fabric circle with black thread, then gathered it around the cardboard circle.

After clipping the first one to fit between the back supports I got smart and gathered the circle outside those supports so I wouldn't clip my gathering thread along with the fabric & cardboard!

I used wood glue to assemble the chairs. I laid the front legs bottoms even with the bottom of the back supports and marked where the top of the front leg came on the back support using my utility knife blade, so when I glued the back supports in place all the legs would be the same length. It was harder than it seems, even being meticulous; the seat notches for the back supports are much shallower than those for the front legs.

I glued the seats with white glue

and clamped them down all round.

Then I glued on the shield backs. They look OK plain with the seats, but would need some sort of carving or other decoration if left plain. Then, plain, there would be the jigsaw appearance of the front legs fitting into the seat notches for them.

Next I removed, sanded

and stained the desk pieces.

My DM had a maple breakfront with a slant-top desk in it that she ended up using for a china cupboard, so that's what I'll try reproducing with this. I wish I could make it with working drawers, but that's not the way it's designed. I shall begin gluing it together later. Right off the bat, the doors aren't designed to open & close, and that's unacceptable if I'm going to put things in it (and you who know me know I'm going to put things in it, I just told you I was using it for a china cupboard!).