First and foremost, I’m going to answer the real question: Yes, you can sell finished items made from my patterns. Any pattern. But like most designers, I would like credit for my hard work. As a rule of thumb, you should always put “Pattern by www.hookedbykati.com” (or the name of the designer) on your tags or listings for the finished items. This shows the designer you value their work and that you are not taking credit for the design.