Hi, I know what you mean I had that problem for quite a while. Just being aware of it helped, Using a wooden skewer should be helpful but in addition I use the index finger of my left hand beside the presser foot and slow down a little when getting close to the point. I also make hst by starting with a square and sewing 1/4 inch on both sides from the center diagonal line and then cut on the diagonal line. You probably already do that. But slowing down helped and using my index finger as a guide helped to. Keep practicing