Ah here's the original. I almost forgot to upload it. The wallpaper where I used this is over here
As you can see, it has nice saturated colours. I also extended the original scan
. So you can see that the pants and the strap with the yellow ring on it look very weird.
After getting used to the pure black shades on the wallpaper, I had a look at this image and I suddenly felt that the dark shades weren't dark enough. Luckily I had gone crazy on the gradients which helped to darken the dark parts (but they left the light parts intact...layer effects are awesome!).