Backdrop Muslin What is too cheap to transparent? W/ PICS

[WhichVDSLR]

Hi, I just bought a few backdrops one Black, one White and one Chroma but I think I bought bad quality one I publishing a picture to show how the light pass though, What do you think?

 

[welly]

Background muslim?

 

[rockkeeper]

put it to a wall and take a shot