Well Vishesh, you found the answer to my problem! I’m getting a shadow now. at first it was a small line, but after moving one of the masks I could get a thicker line that acts as a shadow. With softening in the shadow effect and resizing the mask it’s a proper shadow that moves with the top image. I haven’t found a way yet to let the top image come out of the background; putting it all in a precomp didn’t work, but that wasn’t the actual question. if you know a way to let it come out of the background (fade in is always a possibility, but I mean scale from 100% to about 150% with a short fade in of about 10 frames)in 3D layer in Zspace, would be super of course. I will try myself as well of course.
Thanks for your help.