[Redwiz]

When pixel art is printed, it always looks.. pixellated, and sharp. The reason for this is generally because printers can print say 300dpi, which is the equivalent of 300 pixels per inch. So in a space of one centimeter, if you have 32 pixels, where normally your used to maybe 150 different pixels filling that space, you now only have 32 pixels and it has to be enlarged to fit the area sufficiently.. It's quite interesting, design for web + print are two totally different kettles of fish, try printing luminous greens too for example. Anyway, maybe try gradients in photoshop and instead of having the light coming from directly in front of the pillar as dusty did, experiment and have the light coming from an angle.