Thank You,Sir; I Will Try

I do not have any pictures, but it is not too difficult, and I hope I can express it clearly enough.

First, cut a strip of thin sheet, .010" or .015" (.25mm or .37mm) usually, a hair narrower than the desired width of the seat.In 1/72,this will usually be about 5mm wide, and the strip should be about an inch long (I like to leave room for screwings-up,and this way you will have extras of consistent width if needed).

Next, score the strip across, a bit over 1mm from one end, and then again about three or four mm along the strip. Bend both scores (with the cut line on the outside) to an angle of a bit over 45 degrees. Fill in the score lines with CA, and hit with accelerator (liquid patience).

Here, things vary a little depending on the seat back.

If the seat back is to be flat, put another score in, a bit past the second score, then bend till vertical or near vertical relative to the bottom of the seat, as needed, then fix with CA, and cut off at the proper height.

If the seat back is to be curved (as this one is), cut the rest of the strip off, past the second score point, so you have a thing like this \___/ in hand. Then make a bit of strip just a hair wider than your original piece, cut a length of it appropriate for the height of the seat back, and press a round form into it, with something like the back of a tweezers or a paint-brush handle, pressed against your fingertip. Then fasten it to the rear of the seat bottom with CA and freeze with accelerator. If necessary, blend in a bit with a coil of sand-paper and the edge of a curved No. 10 blade.

Then add the sides. For this you just need some largish pieces of thin sheet, roughly equal to how high and how long the seat piece you have now is. Attach with CA and freeze. Trim the shape of the seat's sides in with a razor knife and a sand-paper coil and a half-round needle file, as suits your taste best. Trim off the excess under and behind the seat, and sand down smooth.

You might be done here in most cases with making the shape. But sometimes the part of the seat back above the sides is the same width as the sides. If this is the case, stick in a little bit of shim to that portion of the back, and trim and sand as appropriate.

The final step is just to sand and scrape the thing thinner, or at least to get the very edges of the sides and back and front at the bottom looking thinner.