Trying to get paper falling away look

Hi.

I am trying to get a look of scissors cutting through paper and then the paper falling away to each side. I created the scissors in C4d and animated with an alpha. I am using masks to seperate both sides of the cut but am struggling a little bit to get both sides to realistically fall away.

As an FYI I am using Aftereffects 6.5. I am posting this in the C4d as well to see if it's better to do it there. My big issue though is that the whole spot is graphics and the beginning is done in Aftereffects so I'd rather do it in AE then take it into C4d for the paper falling away.

Any thoughts or suggestions ? Thanks.

Chris