If you go to the popular quilt teacher websites, look what they charge for a program, workshop or lecture and then add up the dates that are filled, book sales, patterns, well I did this with one popular teacher and she made a six figure income. Of course you'd have to travel about every week to everywhere and be gone days at a time. It is a full time demanding job to make a good income with quilting. It certainly won't be a 9 to 5 job.