Windemere Art Gallery in Mechanicsville recently opened “Home Place Creations of Mother and Son,“ a show of oil-on-canvas paintings by artist Chris Harman and his mother, Joyce Harman.  Chris, who became a quadriplegic in 1977 after a swimming accident, works with a paintbrush held between his teeth. He started painting about a year ago; Joyce has been painting for more than 50 years.