Tinkercat, you're talking about selling fabric online? I'd go through eBay! It's not enough to have a website and selling abilities; you want to make sure you have the exposure so people can see it and buy it! eBay is a great way to go!
You just need digital pictures to upload. One good picture per auction is good, since I think they charge you per picture (you can add more pictures for free, but you need web skills to do so; one picture's enough).
Congrats on your opportunity, I hope you make some good money!