Question / Help Getting green screen to work

[TripleGemini]

I bought a cover that is usable as a green screen and I got most of the background to disappear, but I'm running into a small problem. There are parts that are flickering because those didn't disappear with the rest of the back drop. I wondered if there was a way to fix this?

 

[R1CH]

There isn't much you can do other than to improve your lighting so the background is more consistent.