adding signature layer/watermark and flattening image as JPEG color bands across flattened image
Hi there,
Not sure why this is happening, but everytime I add my signature (PNG signature file) to the bottom of a photo it adds color bands across the entire image. Whether I flatten the image or use save a copy it adds these color bands. I like to save these as JPEGs when I send them off for printing. Does anyone know what is going on and why this is happening? I've attached a photo of whats happening, thank you. 
