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stop doing this to sign digital paper first sign on a white paper choose the best one and crop it now go to channels select red Channel and duplicate it and then go to image menu adjustments and curves now adjust the curve until you get the best result after adjusting the curve hit okay and load Channel as a selection now delete the red copy and go back to layer panel select the selection tool right click and choose select inverse now create solid color adjustment layer with any color you want delete the background layer and we are done save it as a PNG or you can copy and paste this signature anywhere you want