How can I overlay/multiply a solid black color on a detailed background texture?
Hi. I'm trying to overlay/multiply Belgium flag on a grunge B&W background. The yellow and red details are well represented but details of the black part are not shown at all. It does not matter what combination of layers I put. The details are not displayed or it looks very unnatural. I'm not professional Photoshoper!! So any help to how can I combine black part with a natural detailed texture?? Here is the picture for more information:

