A lot of time in teaching sewing classes they pay you by the student/hour. In our area classes go for about $10 per hour and teachers are paid between $6 - $7/ hr per student. If you had 3 students you would be getting $18 per hour. Some of the shops ask you to be there a little before and after class (not paid). If they work that way and you have 4 -5 students you could make some decent play money but you probably won't get rich.