Hello all :) I am a newbie at Photoshop, I really have just used it so far to mess around with contrast and saturation, really simple things like that. Now, however, I have a specific goal in mind but I have no idea how to do it! I'd like to create a texture with a grunge map - what I mean by this is to have one layer with sort of your basic texture, and then another layer on top of that for scratches, dirt, etc. How to I configure the transparency of the grunge layer for what I want? So that the lighter parts are more transparent and the darker parts show up more.. I hope this was coherant, and any help would be very appreciated. Thanks so much! -Jenna