The proper thing to do is to ask for permission as most designers don't want you to mass produce their ideas and claim them as yours and make money from their creations. I think you'll find that most of the time a creator will grant you permission without any trouble, they may ask that you give them credit in some way, whether it be on a tag on the craft, or some other display. It is a good question tho! Many crafts are simply recycled ideas, but I know for a fact that I have made many crafts straight from my head, not from seeing it somewhere else. If there are any crafts in particular that you have found here that you want to make and sell, simply write to me and let me know which ones and we'll go from there!
