I have a green screen that works really good.
1. Go to walmart or any store with a crafts section.
2.Get some neon green poster boards(paper not cardboard)
3.Either get clear ducktape or get the lime green ducktape .
4.Go home
5.Put them in a square , 2 on top 2 on bottom.
6.Remember to tape the part that will be touching your wall not showing
7.Flip it around and tape/nail it up .
For the lighting ,
Walmart and Home Depot sell Clamp lights for about 2 dollars.
Sun
Get pieces of foil and angle them so that it reflects back to the green screen. Shine light on them