John,
Thanks for the suggestions and comments.
Actually, I sewed it exactly like you said. I used my compass to scribe a line around the edges, then used a stitch wheel because I wasn't sure if I would actually stitch it or not. I've seen them done by painting the stitches from the stitch wheel. Then I set my stitch length on the machine to match the wheel marks. I also hand turned the wheel stitch by stitch, each time lifting the foot to line up the needle to go into the same hole.
I think the reason the stitches aren't perfectly straight looking may have to do with the needle and thread. I used a #22 leather needle with #138 poly thread. I have a feeling that the needle was punching a hole just a little too big for the thread. I'm going to switch to maybe a #18 needle next time. The #22 was the only size leather needle I had. I may also try going to a bigger thread, but then #138 is the biggest thread I have!
I was looking at my presser foot and I'm thinking about using my Dremel to cut off part of the foot so I can see better without having to lift the foot each time. I think by cutting back the center foot, it will still sew OK, but I want to order an extra foot to have on hand before cutting the one I have, course I do have a zipper foot and cording foot I could use if I had to.
Thanks again for the suggestions,
Bobby