I'm in the process of getting fedex certified & was wondering if you have to use any certain type of boxes. Would the shipping boxes you buy from walmart be okay to use? I'm also unsure of how you get a label. Can you print them off? Can you put them anywhere on the box? Sorry if these questions seem stupid, but I want to ship the right way. I don't ever want to get a call or email saying I packed a snake the wrong way & it arrived dead.