The wall or floor must be smooth and flat and the paint you choose must be a matte or matte enamel finish.
How to hang a green screen on a wall.
Most green seamless fabrics have a small fold on one end this loop allows one to mount the fabric to the frame.
Remove the horizontal rod from the top of the frame and feed it through the loop in the fabric.
Make a distinct crease where the green screen meets the bottom of the wall pinning down with tacks too.
When you hang the screen if you choose the soft option there are several ways that you can do this.
Use tacks or pins to anchor the green screen material to the wall.
Once the rod is in place continue to unravel the fabric with the rod to the top of the frame and clamp it in place.
Mine is about 11 x 12 so my box had to be pretty long.
Make a pull down green screen wall.
This is also a viable option for floors so you can create an entire green screen set.
Remember if you do this you will need to make sure a strip drapes along the floor so that you can weigh it down with heavy objects.
Second attach a curtain rod to a wall and hang the screen from that.
The first thing i did was to measure the width of the green screen.
How go setup a green screen at home will show you step by step how to set up a green screen chroma key effect at home this video shows you how to set up lig.
If you happen to have a free standing flat or a spare wall available you can paint it green or blue to achieve an easy diy green screen.
The first you can tack it to a wall.