Yep... Photoshop is a wonderful tool... and the more time you spend playing around the better you get. Not just web-designers can pick out the shops though To be nitpicky, instead of 'sharpening' the whole image like was done... if you really cared about presentation of your own image you'd do the most intense sharpening around the eyes, a little on the body, and then actually blur the background to draw the focus more on that beautiful snake.

You can do a world of good with auto levels, hue/saturation, and brightness/contrast... but those are essentially a hammer, screwdriver, and a saw in a toolbox the size of Home Depot!