I did this for work. Its going to be about 8 feet long when it gets printed.
I did all the black by hand, and Rasterized in Illustrator, then colored.
Its been a while since I've done anything other than photoshop.
I had to re-learn a bunch of stuff. But for enlarging, it needed to be vector based.
Click on the image to see it bigger. Im pretty happy with it. Plus, I believe there going to use it for multiple stores