Do you have any sales experience? Do you know what mark-up is typical on fabrics, what credit terms you could get from suppliers, what the lead time for you ordering holiday fabrics would be, what your obligations would be on collecting sales tax, etc?
Most importantly, do you have a feel for commerce? Why don't you try to make some sales on the board here first, and see how it works out for you?
I dont want to rain on your parade but a huge number of start up businesses are not profitable for quite a while so I would be rushing in to borrowing money before I had a very good idea of how I was going to make it back.
If you feel you have flair in this area, set yourself a challenge to make a small profit on something you already have in your stash? This will test your communication and marketing skills, and let you see how hard it is to part people from their cash!
I hope you can build the business of your dreams, but you have a lot of work to do to prepare for success.