One dollar per month, or above
1) Be listed in my Credits, which I display on my website and deviantArt. I will also put a link or two of your choosing next to your name (for example, to your website) to help increase traffic.
2) Have access to certain behind-the-scenes stuff... sketches, works-in-progress, exclusive concept art and world-building info, etc, related to any of my projects.
3) Be able to read pages of comics/graphic novels early, generally in their sketch stage. :)