OK so I sold some baby clothes to a lady and she paid. I am shipping out on Tuesday since its a holiday weekend. She's now decided she wants to purchase more items but wants them all shipped together. Since I haven't printed the first shipping label yet, I am wondering if I can add the new amount to the original invoice so that I can ship all together? I've not had this issue before, usually people are fine with two packages when this comes up but I told her I would try to see if it was possible to ship together since I hadn't printed the shipping label yet. I appreciate any help! Thanks guys!