White Paper sack shader

Hey guys, im having trouble trying to achieve a good result with translucency shader and principled shader.
This is what im trying to get:

Im using this setup of nodes:

The problem is gamma node to the factory, but without it i cant get a white material, but with it the translucency is gonne…this is what i get rendered. No translucency at all:

Sooo, someone can help me??? Thx in advance!!:smiley: