Are you using a zig-zag foot or a straight stitch foot?
Another idea would be to make sure the first stitch on the diagonal is slightly in from the edge.and holding onto the leader scrap the first few stitches.
Another idea would be to place tissue paper or tear-away stabilizer (maybe wash-away would be better) under the start of the seam.
Janey - Neat people never make the exciting discoveries I do.
Last edited by OurWorkbench; 02-26-2019 at 07:15 AM.
Reason: improve answer