Oohhh, I would love to have any links and/or info you'd like to share! I actually did stumble upon the package testing form. (It was hard to find)! It says to attach it to the outside of the box, though...does that mean folded inside plastic like an invoice or taped all flattened out to expose the whole page? Oh, and can I just print out a label myself online for shipping it? I'm confused about addressing the test package since they want the form, which shows the sending address, on the outside of the box + I'd need a label for them to scan/show that I've paid for the shipping which also has the sending address on it. Thanks in advance for any answers/info!