First off i start with a concept in my head. Then(if its a person) I sketch out the skeleton real loose like. Next I start to flesh it out by adding some shapes, shapes are nice. In succession I start with the top and work my way down with detailing. Finaly after thats over, I ink it, throw some little hatchmarks here and there and im done.
If its not a person or creature, somthing like a building or a robot, i spend a good amount of time thinking about it. How will it move what function does it serv, what technology do I have to work with. Then I just sketch gerth lines to give me a sense of size the I start to box in shapes and then I add form to it with more lines. Next I detail it and ink it.
SOMETIMES I will shade a drawing with pencil. For that i just pick a light source, draw the shadow lines really lightly and then I shade it. I also go back with my eraser and add highlights.
When using markers to color, I just start with the lightest color and work to my darker parts, making sure the light is casting shadows correctly and etc. Then, because i have no gauche, I use watery acrylic paint to add minor highlights. I also use a white colored pencil. It works ok, but not that great.
When I draw in ink, i use a bic ball point pen and lightly sketch my shapes of what im going to draw, then i go back through and make lines darker. Then i shade it with the same pen, those pens almost shade like pencil.
And one other thing to do when I hav no more ideas, is to sit down with some scrap paper and just draw random lines and shapes. I can usually start picking up forms and subjects from the mess. Then I just re-draw it on drawing paper and modify it with any adjustments I want to make to it.
"Astronomy offers an aesthetic indulgence not duplicated in any other field. This is not an academic or hypothetical attraction and should require no apologies, for the beauty to be found in the skies has been universally appreciated for unrecorded centuries."