Are you using masks to roto the guy rather than using Keylight or some other filter to get this guy seperated? Why use the greenscreen if you’re just going to roto?
Anyway, if you want to add a mask inside another mask and you want them to interact differently you have to change the masks settings.
Select your layer with the masks in the timeline and press “m, m”
You’ll see the properties for all your masks come up in all their glory.
Your masks should have a little drop down menu thingy that says add; make it say other things (such as, subtract) and you should be happy.
You’d be even happier if you used keylight.
– The Great Szalam
(The ‘Great’ stands for ‘Not So Great)
No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.