Ohh I get what you're doing.Ok...here's how you use lighting effects.1) Create a NEW layer. - Make sure this layer is on top of the layers you want to be affected. - Paint this layer ALL WHITE.2) Make sure this layer is selected and go to: Filter >> Render >> Lighting Effects. - Choose your effect and press ok.3) You will get the affect on a white layer. Change the blending options to whatever you want. (Overlay, Soft light, whatever) - You can try different things with this like fixing the opacity, or duplicating the layers, etc. I think thats what you were having trouble with.