Has anybody made their own green screen?

I set up a polyester (I would imagine) green blanket across a wall, and I use it from time to time with iMovie. It doesn’t work perfectly, both because of wrinkles in the “green screen” and the fact that iMovie is not a very advanced software, but I would recommend it for those who make videos/movies as a hobby as opposed to a more serious thing

Green cloth is the cheapest. Find the best chroma saturation of green.

Overlap the top and bottom of the cloth. Sew together having a “channel” then run a piece of PVC pipe through the top and bottom, when hung, will flatten out the wrinkles.

Or paint a wall.

Mayhaps you can paint some large pieces of drywall green?

There is a green screen paint available. There are youtube how-to’s.

Man I just threw one away yesterday!

They sell paint that you can use on any wall instead of buying an expensive screen. You have to light it just right, but should still work for a small personal project.