An art movement is about to take over West Palm Beach.The Canvas Outdoor Museum show held an early Launch part in the graffiti garden behind Henry’s Gallery on Fern Street Saturday night. Canvas is being called the nation’s largest outdoor museum show.The two week event planned for November will add dramatic, inspiring murals to selected buildings and infrastructure throughout the downtown district.”I think the impact will be huge,” said Canvas Founder Nicole Henry. “We will have the best artists from around the world with big followings on social media. So all their fans will follow them. We have all these other programs going on. Plus, all this beautiful artwork as well. It will pull people together. We will see a lot of people in this area.”