help with lampshade

This might help a little:

I have done it by taking a big sheet of paper - newsprint works well - and marking top and bottom wires in one spot, then starting at an edge of the paper, roll the frame in a sort of half "U" tracing the wires onto the paper to make a pattern. When you reach your marks, draw a line for that end. Cut it out and put it on the wire form to see if it fits. When you cut your fabric, you'll need to add seam allowances.

You can wrap each wire with cotton tape, then sew your shade to that - or tack it. you can also fully line the shade so that it goes on the frame more like a slipcover and gets sewn or tacked along the open end.

I find that the bias of the fabric works best. I would even consider doing a shade in panels to make sure I'm always on the bias.

You can use trims, such as gimp or woven tape on the edges, which covers any stitching or marks from a glue gun.

You may make a couple before you find you have one that pleases you.