What barbpowers said about pushing the fabric gently towards the foot for SITD. I mostly do FMQ in a large stipple. Also try loosening your tension on the thread. I agree with making a sandwich for testing all your settings before starting on your quilt, wearing any gloves with rubber nubs. I also try to keep the quilt loosely around the needle area, takes the pull off the quilt. Good luck and just try all these tips and you will improve.