I've made a tutorial for my newest signature. If something is unclear or if you have other Photoshop-related questions, I'll be happy to help
The textures:
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture1.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture2.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture3.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture4.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture5.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture6.jpg
http://i301.photobucket.com/albums/nn46/Sas_kiaa/Andere%20PS%20stuff/Arshavintuttexture7.png
I hope you've learned something from this tutorial