Folding a 6x7 Blue Screen can take hours for first time users. Heck it took me quite a few myself before I got it right. There are plenty of video's and instructions on the internet on how to do this but none of them got it "right" so I made this video (thanks to our intern Jay) to help everyone.
The secret is the "Taco" shape- once you have a "bouncy feel" to the screen you've got it made. You'll want to wear shoes for this and stand on a non-slip floor (like carpet) and have PLENTY of space around and above you. Once you've got the hang of it you'll be able to do it in front of customers with no worries of loosing credibility!
I have read another user accidentally flipping their cat out of the window when they opened them up for the first (and probably last) time and I myself knocked down one of my lights (I wasn't filming at the time unfortunately).
Folding these screens is a hard skill to learn- you are not alone! I'm Luke Frohling from Search Engine Domination.