These templates use Photoshop (.psd) files, so some basic knowledge of photoshop is required to be able to use them, as well as a program that is able to open and manipulate Photoshop files. In particular you must know how to manipulate layers, use brushes, and use layer masks. There are many groups and layers in the images, but I have done my best to clearly label them to make your navigation easy.
You are free to use, modify, or distribute these files for any non-commercial use. Please direct all enquiries to firstname.lastname@example.org.