This is a reduced copy of a JPEG straight from the camera, with no adjustments and no Photoshopping. It's possible I could make it "better" by messing with it--but it's just as likely that I could screw it up. A voice inside my head said to leave well enough alone. What are the voices telling you?
Nowadays if you want a photograph to be "perfect" there's not much to stop you. You can shoot with equipment better than you could even have dreamed about ten years ago. You can mount your camera on a tripod and, with the help of instant digital feedback, ensure that your exposure, focus, depth-of-field and color balance are all spot-on. If you shoot raw you can even tweak the exposure and color balance after you release the shutter.
That's not all. If you own imaging editing software like Photoshop (and who doesn't?) you have practically unlimited control over the image. Sharpness, contrast, saturation, noise--you name it, you can control it. If there's a piece of chewing gum on the ground and you want to remove it, no problem. If you simply want to change the color of the chewing gum, just wish it and it's done. The only limit to realizing your creative vision is its breadth and depth--that, and well you know how to use Photoshop.
But as Peter Parker learns time and again in the Spiderman movie series, "With great power comes great responsibility." It's one thing to improve an image by minimizing or removing obvious and distracting defects; it's quite another to attempt to improve on nature. Before you know it you start to believe that "this scene would look better if I move that rock over there," or "her face would look better if I change the color of her eyes," or "the whole image would look better if I eliminate all that distracting noise." Next thing you know you've got an image that, although it may look beautiful to you, has a freakishly artificial quality to anyone audacious enough to compare it to everyday reality. (Michael Jackson in his later years springs to mind.)
Let me be clear: I think Photoshop and digital imaging are wonderful tools and far be it from me to dictate what is and isn't within the bounds of creative expression. I am simply suggesting that before we rush to "improve" something we take time to humbly acknowledge the possibility that doing so may rob the subject of the very qualities that make it so appealing. And after all, who are any one of us we to presume that we are the ultimate judges of beauty and perfection?