Mercury Ice offers various graphics tutorials for Photoshop. If you would like to submit a tutorial, please join the forums and follow directions there.

Below is a list of tutorials currently available, listed in alphabetical order by subject.

Abstract Background - Learn how to make an abstract background. [Photoshop]
Brushed Background - Learn how to make a brushed background. [Photoshop]
C4D Signature - Learn how to make a signature using C4D. [Photoshop]
Colouring Hair - Learn how to shade hair. [Photoshop]
Doll Customization Part 1 - Learn how to customize a doll base. [MS Paint]
Doll Customization Part 2 - Learn how to create clothes for a doll. [MS Paint]
Full Signature Tutorial - Learn how to make a full signature for forums. [Photoshop]
Lelouch Avatar Tutorial - Learn how to apply textures and colour changes to make an avatar. [Photoshop]
Smooth Skin - Learn how to smooth skin in pictures. [Photoshop]