It is a bit tricky, and it will take both some practice and patience. Included were some instructions, which I found to be helpful. There are also numerous YouTube videos illustrating the proper procedure. It is a matter of both folding and twisting to achieve the original, compact disc. I would suggest that you head over to YouTube and search for "how to fold a light tent" and you should find multiple videos. Hope this helps. Just be patient. You'll figure it out and find it to be easy.
Fold the top down from the front opening toward the back bottom (the sides with the velcro on the back corners are the top and bottom), then fold the bottom up so it is a flat square. Now, grasp parrallel sides (it doesn't matter which ones, just parallel) and push together in the middle in to a figure 8. Then fold it in half. Sometimes mine will kind of curl up into thirds when I fold it. You should be able to fit in the bag at this point. It takes a few times to get it, but not too tough. I had trouble at first too, so you aren't alone. Good luck.
Ha ha ha. I've tried and tried and could never get it done either. You need to fold and twist at the same time. My husband ended up doing it for me because his hands are bigger... All in all this is not the greatest design