Anyone know of anyone who can do professional custom paint work on a helmet in the Seattle area?

Please let me know...

 

I don't know about the local area, but probably the greatest airbrush artist in the world that specializes in anything automotive (land, sea or air) lives up in Snohomish; Mike LaValle of Killer Paints.

I dunno if he does helmets, but his services can't be cheap, but it'd be worth it if you're looking for the best.