BUDDING local watercolour painters are getting some expert tuition from artist David Birtwhistle when he stages a workshop day at the National Trust's Croome Park, next Wednesday. David, a Worcester-based artist who often paints at the park, will give an introductory talk on technique and the rest of the day will be spent painting under his guidance. For details or booking (£45 each to include lunch and refreshments), call 01905 371006.