Deciding what to sell

Deciding what to sell - student project

I have been crocheting for s few years now and I am ready to start selling some of my creations! I have given some friends and family some hats to try out and have gotten some positive feedback on them. I was also thinking of maybe having some ready to sell and others to be made when purchased? Are there pros and cons to this? I would love some feedback on the idea! Thank you!