You'll need to case the place for a couple of days. Make a note of all camera locations and exits. I like to break out the ol' pen and paper and draw up plans and strategies, but, if you're feeling confident you could always wing it. You'll need something to obscure your face also. A black ski-mask should get the job done and show that you have class. if you can't find one, you could always wrap a T-shirt around your head if you know the method for making a mask out of a T-shirt. If funds permit, a little body armor never hurt anyone.. Also, if the clerk gives you any trouble, don't be afraid to let 'em know who's the boss by giving them a little tap on the head with your weapon. You need to let them know that you're in charge and that you mean business. Failure to comply with your demands should be met with a well placed shot to the arm. Should you get caught, you won't have to worry about a murder charge on top of assault and robbery charges. Oh, if it's your first time, bring a couple friends.. Good luck!