Plain chalk works fine and washes out. No need for special chalk. It’s really easy to free motion those arches, though, once you’re in a rhythm. Practice on a quilt sandwich about 20x20. Draw big boxes and sew curves from corner to corner. Gloves are a must..... garden gloves that have a bit of grip will work okay. HInt— sometimes going faster works better than slower on a curve.
Last edited by zozee; 01-19-2018 at 10:38 AM.