Photoshop cut and apply pattern in surface.

See the .psd in attachment to get a perfect idea of my needs. I have 13 photos of wood letters. The letters will be cut and applied an image pattern on this surfaces. The pattern in the sides must be correct in angle and distortion. Pattern must vary from one letter to other, to be more real. Shadows must be correct with the angle of light. A little shadow must be applied under the letter. Files must be delivered in .psd format, in layers. Like the .psd in attachment. One letter per file. Files that I will send have 12mpixels 300dpis and must be delivered in the same size and resolution. The .psd in attachment is only an example and is less than original files. payment only after checking the result of all photos. Best regards.