Going around the web I found a manufacture of really big,but portable diffusers.
The good thing about it is that they have an online catalogue and downloadable catalogue.In this catalogue there are many examples on how touse their products,much of them also show the setups used for taking really professional shots.You could and should download the catalogue and learn how the pros use those bounce panels.It will be you job to learn how to adjust the stuff that you have at home and imitate the effect of the real one.
Of course you could also buy their products,there is an online price list available.
Click here for the online catalogue.
