So, I finally got to load up that Glen Cook cover as my background. And you know what, whomever did the retouching for the background, learn 1) how to photoshop by the numbers, 2) calibrate your screen. The touch-up was bad. Jumped out at me immediately. I could see your brush strokes. Really. A little color selection, a little level adjustment, rebrushing, correction for JPG artifacts, and we're in business. Okay, I shouldn't be so harsh, they're probably the graduate from many official Photoshop courses (hint, 24% of what they teach in those are bogus and lead to errors and unprintable documents - I know because I had to take some of them, even the masters courses, I should say that the majority of classes by people who actually use Photoshop in the wild were excellent, it's the commercial courses that suck).
And just for giggles, here's my old desktop. That's my back yard last winter.