RedDoor Gallery invites the public to experience magic behind the masterpieces of Cheryl Mathieson and Matthew Clarkson on Friday and Saturday as the grand finale for Brush Strokes in Motion. Photo courtesy RedDoor GalleryBrush Strokes In Motion wraps up with up with Cheryl Mathieson and Matthew Clarkson Demos this week at RedDoor GalleryRedDoor Gallery invites the public to experience magic behind the masterpieces of Cheryl Mathieson and Matthew Clarkson on Friday and Saturday as the grand finale for Brush Strokes in Motion. This Friday (Jan. 30), from 3-6 p.m., be inspired by Cheryl Mathieson’s live oil paint demo. Then on Saturday (Jan. 31) from 3-6 p.m., Matthew Clarkson performs a live demo using his signature alcohol ink painting process. Both Mathieson and Clarkson are top selling artists at RedDoor Gallery.