I do pattern drafting and quilting. I am often ask to teach. At church i gave free lessons. Quilt shops are for pay. Problems are many. Be honest in your credentials. I use my husband as a sounding board to make sure I am explaining the subject so everyone can understand. Sewing for over 50 years I forget to tell a step. Set an age limit. Some woman brought their children to class and the children couldn't set still. The cutters where always fearfully guarded. it was hard to think with the children there.