Looks great!! I really like seeing someone go through the effort to paint on the sideart, and like SirP said, it looks very authentic. Although the later production runs of Ms. Pac had vinyl sideart, the painted ones just look better.
I recently picked up a Ms. Pac upright that someone covered the sides with green laminate. I'm gonna remove the laminate and try to repaint the sides on mine, too, although I doubt I have the patience or talent for it... Again, fantastic work!