My wife and I have been doing crafts at shows (ceramics, painted glass, candles, etc) for years and have heard that many times, at least once per show. What the people do not realize is that we have been doing this for YEARS! It's not just picking up a brush and WOW its done! Also, do these people know they have to purchase all of the colors, equipment, fragrances, etc to do the work and that it will cost them much more than you are selling it for (wholesale buying power!). But if they really want to do it, let them! Now she will bring her paints with us and paint glass at shows when it slows down. People stop and watch, and look with wonder, and many times put an order in for items. She can turn them out in about 15-30 minutes. Doing candles at a show wouild be more difficult, but I believe it would defintely generate sales in your own shop.