A GFX Signature is about Graphic Effects. So, usually you have a render/picture and you do the background according with what you think will suit better (brushes, contrast, patterns, textures, c4d's...). It's a combination of Graphic Design with Effects. The most used program for this stuff is Photoshop.
Rules: 1. You can nominate up to 5 members; 2. You need to fill the points order [ 3 / 2 / 2 / 1 / 1 ] according to your favourite entries; 3.Do not vote for someone just because they are your friend or they ask you to. This is NOT a popularity contest. 4. Keep the entries Anonymous! Or you'll be disqualified! This goes for typing your name into your entry or post your entry into your profile, for example.