YES YES YES Starch!!! I spray the fabric and let it set for about 15 mins then lay it out and press it well. The best starch is Mary Ellen's but that is quite pricey. Can Spray starch has always had a tendency to burn for me. I use the starch in a blue gallon jug that you mix 50/50 with water. Starch is absolutely necessary if your fabric is not the best quality. If it is higher quality then starch is still very useful but not as critical IMHO.