See how pro surfer and Astrodeck owner Herbie Fletcher has been channeling his intimate knowledge of waves into art at Known Gallery. Explore 500 cutout figures from a 17-volume book for Matt Lipps' opening exhibit this Saturday at Marc Selwyn Fine Art. Discover how Petra Cortright uses Photoshop to create beautiful aluminum-based works and other media at the Steve Turner Contemporary gallery. With a mix of ongoing exhibits and others whose openings are just days away, we have your guide to L.A.'s best art shows to check out this week.