I make glass beads and sell them on Etsy; it can be quite hit and miss as to whether things sell or not. But, it doesn't cost very much so it's definitely worth a try. It costs a few cents to list something for four months, then if it sells you pay a percentage of your sale to Etsy (all done via Paypal).
Things to think about;
1. Have some clear Terms and Conditions set out (what happens if something gets lost, someone doesn't like it etc. ; you can look at other shops for ideas.).
2. Take good, clear photos of your item and write a nice description.
3. Don't under-sell your product; hand made things take time and talent!
With respect to the pattern/ copyright thing, probably best to check with the individual pattern maker; some are happy for you to sell with acknowledgement, some want you to pay a small 'licence' fee to sell.
Good luck!