This image was done the same way as the one in the post below. I sketched it all with a Pilot Hi-Tech .25 ballpoint on a 8.5x11 sketchbook page. There was little to no planning of the image (no pencils). I started noodling out the main ship, and just let the rest of the image 'happen'. You know, one of those artsy things. I cleaned up some of my failed and eyeballed perspective lines, and vomited out some colors...probably more than a sketch deserves, but it was fun.