This might be considered for people who are intermediate with photo shop but I thought this might be fun for us to play with! You can make anyone sparkle...it doesn't have to be your Edward.
Here are the steps...
I started with a nice sunny shot of "My Edward"... you gotta have sun for the vampire to sparkle... then I made a quick mask selection of the highlights, refining when needed, we don't need to add sparkle to the meadow... so just the skin will do. I placed that on its own layer and started adding effects.
Effect number one was a layer style... I used Pattern Overlay... Dirt. I then created a layer of that, made a few curve adjustments to get the right tone and hue and duplicated it. On the dup I added a Radial Blur on zoom at about 16. I placed the blurred layer under the first effect layer so I still had detail. I also changed my layer mode, on the first effect layer to lighten, that seems to add just the right amount of glow.
Next, I had to add some multi-faceted sparkling to the texture... so I made a bunch of tiny little rainbows and some bling using different brushes on its own layer and turned back the opacity to about 81%.
Lastly, I added some noise to the first texture layer, I used monochromatic gaussian at about 5-8 %. I also darkened the surrounding meadow area so the effects would really stand out.