I did this in pieces to explain how I do this to anyone that wants to know. I use many, many different colors and various size brushes to color the palette until I'm satisfied with how it looks. Then I use the difference tool and make any kind of lines I'd like to. Then I'll set the opacity and brush pressure at about 100, and use the desaturation setting. Then I 'carve' out the shapes that I'd like to accentuate. By using this setting, it tends to bring stuff forward, 3-d-ish. I'll choose the sharpness tool next, highlighting any parts I'd like to for sharpness and 'sparkle.' Finally, I'll grab the blur tool at full strength on opacity and brush pressure and make the background appear even further back, which makes the 'carved' objects appear that much closer.
So, that's what I do. Not sure if that's a clear enough explanation, but since some of you wondered, I thought I'd let you know. I left the upper part of the draw alone to show you the difference of how it looked before I started playing with the different tools.

ps...THANK YOU ALL SO MUCH FOR THE NICE BIRTHDAY WISHES! IT'S BEEN A LOVELY DAY!