Create a texture or get one from the various free texture-sites.
2.
Use the Type Mask Tool and make a letter.
You will have to try a little bit until you get the right size (or you try it first
with the "normal" type tool, keeping the fontsize in mind).
3.
Now go to Edit/Copy. Then
Edit/Paste. This will make a new layer with just the letter "made"
of texture.
4.
Use the Layer-Effects, choosing InnerShadow- for now, accept the default settings.
Be sure, that it's the only effect on this layer and klick ok.
5.
Go to Image-Adjust-Brightness/Contrast and set Brightness
and Contrast to the same setting, about -30, maybe -50, depends on the texture...
Ready!
Try various textures and experiment with the settings for InnerShadow and Brightness/Contrast
to find the right style...
