Here's Another Way!

After the Grammy Poster, I figure out a much more easier, and different way to use type as a texture. 

Different from the Grammy Poster method, which use type to fill up the shadow and midtone areas, and works the best with high key portraits, this method works the best for low key portraits because it uses type to fill up the highlight and midtone areas. 

So, here I got a low key headshot from Flickr:

Low Key Headshot

And then some brushes with many letters (Of course, you can make your own like what you do in the Grammy Poster, but the one below is just more time-saving):

Brushes

Let's start:
1. Open up the image, add a Black&White Adjustment layer to turn the image into B&W. (You don't necessarily need to do that, I just want to make it in this way.)

2.Name the image layer as "face," and add a black color fill layer and name it as "background," and then drag it under the face layer, which make it easier to edit further on.Create a new layer, and use one of the brush you just download to brush ONCE on it with white color. Hold [Command] and click on the brush layer, and then you'll see the brush mark you just make are selected. Click on the face layer, [Command+C]-copy, [Command+V]-paste. You'll see a layer created below the brush layer. Since it has the same color as the image, you'll have to delete the brush layer to see the difference. Hiding the face layer can allow you to see the letters become the same as the face image. And then, repeat as many steps as you need to make the face come out.

3. After you got what you want, you can delete the layers that you brush on. And group the letters layers (this move is just making it easier for further edits).

4. In order to give the letters a sense that they are overlapping each other, we can use a Drop Shadow Layer Style to add such effect to the letter layers. 

DONE!!