I just have to keep telling myself "It's a learning experience". Here's what happened.
I changed the needle to a ballpoint needle, pinned the two pieces of fabric together and put a piece of tissue paper underneath to help with the feed. SNAP goes the needle because of a clogged bobbin. Took the bobbin case apart and cleaned and oiled it.
Then, after putting the new needle in, fiddling with the bobbin tension, fiddling with the stitch tension and swearing just a little bit I finally got a seam sewed. OK, so using the correct needle, stitch and tissue paper worked.
Next problem. The sleeve design is off. It won't hang the way I want it to with the current design so it's back to the drawing board.
I guess it is a good learning experience for when I start sewing with silk and satin to make merchant or noble Elizabethan garb.
4 weeks ago