Sometimes life's little vicissitudes keep us from our true callings. For John Charles, responsibilities have come between him and his paintbrushes for over 30 years. All that has recently changed, and Charles, who was trained in both painting and sculpture at the Chicago Institute of Art, will be presenting his first new work in decades at the Horace Williams House through July 31. In his paintings, Charles focuses on the process, painting on acrylic sheeting in reverse, so that he cannot see the cumulative effects of his work until it is nearly finished ("Creation of Adam" is pictured). Charles believes that everything is in motion, and in the process of building or collapsing, so his canvases are populated by kinetic shapes and distinguished by bright colors. There will be an opening reception for the artist at the Horace Williams House in Chapel Hill on Sunday, July 1, from 2 to 4 p.m. Call 942-7817 for details.