If you don't look at the UV templates, are willing to ignore the seams, and have a good selection of filters, you too can create a quick, crappy texture like this in less than a minute. As geralday might say, don't look too close, it'll spoil the illusion. I used ... let's see ... MuRa's Filter Meister Cloud plugin to generate some interesting organic textures, Paint Shop Pro's built-in Tiles texture effect to add the scaly pattern, and tossed in a bit of noise to soften it up. The wing membranes got the same treatment, although I didn't add a scaly pattern, and used different settings on the Cloud plugin to create veins.