It won't take 100 years, but it will take longer than a month to master a decent candle. Do some research here, read all you can read, and learn all you can learn, then try to master one thing at a time. I would also give serious thought to canceling the shows. If you want repeat customers, you have to have a quality product and I don't see that happening in a month. Nature's Garden isn't to blame for your wax woes. Bad batches of wax happen. They are a very popular supplier and your $100 credit won't go to waste if you use it wisely.