May I ask how you did your labels?
I used Avery.com
They have all the templates right there on the website; you can create an account for free, and it saves them there for ya.
I'm going to switch to using template 5163 with the sticky shipping labels; i did my original as slide in, and the fall out all the dang time.
https://www.amazon.com/Avery-Shipping-Printers-Permanent-TrueBlock/dp/B00004Z5SB
I'll post back as to how it goes with those labels; same ones we use on our X-Mas cards.
If interested in the Avery path, let me know, and i'll see if there is a way to export the labels and share.