Uhmm.. I'll go get some card stock, then.. lol Ok, so I have a layer for the background, I'll select a part of it, copy it, create a new layer and paste the selection into it, apply the effect.. But I'll get a square (my selection) with an effect and then the rest of the background showing without effect. If I give a different opacity to the "effect" layer, this will involve the entire level. On the picture I set as reference (Wyrmmaster) the effect disappears smoothly. Thanks for your help :)