I love animated gifs to show the illustration process.
This is the work process of "badra" illustration.
The first sketch is a fast and tiny scratch done with a red pen. I usually made the cleaning work in different steps and papers, so I have 3 or 4 drawings from the same work.
The final line art and colors are done in photoshop, all the stained glass line work is done with illustrator.
Pencil, adobe illustrator and Photoshop cs6.Final result: