I took one beginners class, then went back 3 more times....i was so bored that i came home finished the quilt and within the year did 17 more. Some just pick up quicker than others. This past October i did 6 quilts start to finish before Christmas, and this included doing the quilting on my DMS... Maybe you should offer classes for different levels, or perhaps offer the 1st lesson for free, so that you can bring in interested quilters, while offering the ''whole package '' at a certain rate to finish. This would also help give an idea of what level the quilters have achieved, and how many need more attention. Or offer beginners (1st class free) showing what you will be making, intermediate ...etc... don't know if this helps but I know it has brought in more quilters this way than before....