I used a wood grain. Change the layer mode to overlay. I used a setting of -35. It is very important to do this on and adjustment layer. This way if you need to change the background later, the brightness will be adjusted on the new material also.
Adjustment layers are one of the most overlooked features of photoshop.
Wood is just not my style, so I think I would like a more exotic texture. To change this you simple change the background layer. In this case I filled the background with on of the KPT preset textures. If you want a different texture inside the cutout part, add a new layer above the adjustment layer and fill with your texture.