Beware of Impulse Buys.
Just because you've got money to burn doesn't mean you should spend it all today. Keep in mind, shops are always getting new shipments in, and spring stuff is right around the corner. While it's an ideal time to stock up on fall/winter goods since they're all on sale, something else you might want even more may pop up sooner than you think. Don't settle for stuff you feel "meh" about just because you have store credit burning a hole in your pocket. You'll never wear it.