I can't see the relief in the dried example. Perhaps the print needs to be more in the light, and the camera placed much closer to the print...

"In my video I posted two years ago"
Are you talking about 4 part "UltraStable Color .m4v" videos on youtube?
No, that was by Tod Gangler, I think. Mine is: http://www.youtube.com/watch?v=EmpTgDlsr3o

I'm not working with 4 colour carbon, but experimenting more with duotone printing. A negative for black ink, and a negative for gray ink.