First of all, I always think about how I want to light my subject before doing anything. I knew I wanted the light to bring attention to my point of focus and then feather off on the rest of my body, so I used the modeling light from my Alien Bee's B800 through a large softbox above my hand. But you just have just used something like a shop light with baking paper over it for diffusion.
Either way, I wanted a shallow depth of field, so I shot with my aperture set at f1.8 so that just my hand/gun were in focus.
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After opening up my photo in camera raw, I adjusted the hue and tint until I got a pale sickly green color. You might have also gone with a bluish tint or whatever suits your taste.
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Next I made a copy of the backgroung layer (ctrl+j) and then set the blending mode to multiply.
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After I've gotten that the way I want, I flatten my image. In this shot, i wanted as much resolution as possible, so I shot it close up. But now I want more room to the left. So I double click on my layer and when the dialogue box pops up I say okay. This makes it a in editable layer. Then I crop it past in the aspect ratio that I want.
The problem you see is that it gave me some empty pixels on the left. So what you do is sample the colors from the edge, make a new layer underneath and then fill it with that color. You can then smooth out the transition by making a mask on the top layer and then with a soft black brush feather it in.
I then downloaded a free muzzle flash from http://www.detonationfilms.com/free_stuff.htm and placed it over my gun barrell.
I didn't like the way the color matched up, so I used a hue/saturation adjustment to get a color I wanted. It's a wee bit to saturated, but it gave me the right brightness, so i'll fix this later.
Now, my way is just a little too clean for this sort of thing, so I grabbed a texture from one of my favorite sources on flickr (do a search there are lots of people offering free textures). and I desaturated it and sized it over my photo.
I then set the scrolled through the blending modes until I found one that I liked. I went with multiply.
Next I added a mask to the texture and with a soft black brush with a low opacity, I slowly brushed out anything that was distracting from my image. I then found another texture I liked and did the same.
After all of that was done I flattened my image and then made a copy of the background layer. I then began to draw a "shattered shard" with the polygonal lasso tool and then hit ctrl+J. This made a copy of just that part of the background image.
Then I rotated the image just slightly to reposition the "shard".
I did this until I had many shards breaking up the photo. Then I went back to the bottom layer and adjusted the levels a bit so that it had a different look than the rest of the shards. Now everything's starting to take shape.
Then I added a slight drop shadow to all of the upper shards.
After I was satisfied with the results I then finished it off by flattening it, adding a little diffusion and then sharpening it slightly. Hope that helps. See you next time.