shadow puppets help?

I’m trying to reproduce something that looks like this:

the image was made in blender.
when i give the screen transparency the shadows aren’t showing up on the other side…
any tips on how to achieve this look?

Need to see an example of the existing material,and preferably a blend file with example(image packed) so we can help fix it.

If you are working in cycles - use the “translucent” shader for your screen. I have just tried it and it works fine.

I made the screen out of a cube (so it had thickness) - but just made it quite flat. I applied the translucent shader to the screen. Then I put a default point lamp on one side of it, the camera on the other - and a object in between the lamp and the screen.

The shadow shows up on the screen just like in your image.