|I was sewing together a leather purse for DW. My walking foot made sewing easy while I had right sides togather but, would not work for top stitching. I was using soft lamb leather and the right side was 'almost' sticky and just would not feed. Baby powder to the rescue. I rubbed a little baby powder on the leather and it fed like magic. I could not beleive how well it worked plus, it cleaned up very easy with damp paper towel.
I did use leather needle, long stitches, and walking foot as has been suggested here on PR.