Make sure you pay very very careful attention to your costs.
Many of the crafty people I know on etsy sell to break even. They want to do the craft anyway, and so they do it, and then they sell it basically to pay for materials. Some who don't pay attention have told me they lose money, but they'd lose it anyway if they make it for themselves, because they don't need all the stuff they make.
And this is your competition, so if you price high, it will be tough to sell.
There are only a few crafts that you can actually make money if you aren't a "famous" person in that industry. (Can you turn pens? That seems to be one of them.) If you do something like quilting, stamping, scrapbooking, knitting- the better way to make money is going to be teaching it to others. If you become a local teacher, your next step is going to be trying to get a book published- which will allow you to get some 'in' at conventions and such. If you are a teacher/author in a craft field you need to get on social media.