
Pictured above is a screenshot of my photoshop document window. I would consider these my "pencils" - I've been working on this book completely digital, either on my modbook or cintiq. I've been approaching the same way I would a traditional page... i pencil things out using a 3-5 pixel brush set @ around 40% opacity - keep working it up until I like where things are going.
Eventually I'll save a jpg and send it over to my editor - if things look good, I'll get the OK to "ink" them - Pictured below is a crop of one of the pages I'm currently building up "ink" wise.
When I was drawing westerns, I would grumble about the horses... All the horses... Now that I'm working on Metal Locus... I have had to do a ton of motorcycles. Things like motorcycles, cars and guns slow me down a bit cause of they must be consistent- all those sharp and straight lines, mechanical parts, their construction, etc... for me organic shapes and objects are easier for me to envision... err... except for horses...
I suppose thats why they say it's important to draw EVERYTHING and then when you're done, do it again. Cause eventually... sooner than later... you'll probably come across it in a script. I, unfortunately, haven't drawn everything there is. I do however have google images and a friend with a neat motorcycle.