Troubleshooting

In the past, these have fallen apart because of the velcro coming off. The velcro has been secured on every side in two places by pegs that also anchor the corners inside the sides. They should not fall apart.

That said, if the velcro does come loose, you could fix it with a black ziptie, as long as the sharp end of the cutoff is not anywhere near the fabric. If you choose black, it should be so small that even having it on the audience facing side won't make it visible. 

There's a slit in the fabric where it wraps around to meet again. It's in a corner and I've labeled it on the top plywood piece. Make sure that's facing away from the audience as much as possible.

When rigging, someone needs to watch it going out and back in to prevent snags, but in practice it's extremely hands off once it's safely attached.

Take care to make it look neat at the bottom, but keep any fabric away from fans on lights.