I’ve seen some very nice images mixing photos with light effects and sparks. If you go to flickr in those Photoshop and Graphic Design groups you will see images with this effect. There’s a designer, I think he's Brazilian, who has some amazing designs using this style, his name is Leandro Demetrius and it’s really worth checking his work out.
Anyway, in this tutorial I will show you how to create an image using this technique.
The wallpaper of this week is a light effect I created a few weeks ago inspired by an XPeria ad I saw while I was waiting for a flight at the airport. It's basically a light beam with a colorful gradient blended with it.
If you want to try to create from scratch, follow the tutorial Colorful Light Effect in Photoshop
Desktop Version