[Christopher Wos]

I just shot a film and I wanted to touch up the blood work via green screen. I’m using a hose attached to an air compressor and shooting it against a 9 x 15 green screen. I have several questions regarding the process. If there is an online tutorial regarding the very nature of this, please link me up instead of answering the following questions (except for the last one). If not, my questions are these:

How far should the camera be away from the green screen?
How far should the blood work be away from the green screen?
Is it okay to get the hose in frame?
Should the hose be the same color as the green screen?
How accurate should the framing of the special effects footage be to the framing of the original footage? What do you sacrifice if the scale of the blood work is adjusted in post?
To achieve a blood spray alla one created by a sword, what is the best way to cut holes in the hose. (how long? how wide? multiple in succession?)

Thank you so much for your help.