K Narasimhalu stunned people at an exhibition in Chennai by doing embroidery with his foot. The 39-year-old artist has cerebral palsy. R Udhayakumar is orthopedically challenged. He paints just one square inch every day. On each painting, Mr Udhayakumar spends four to six weeks.Their paintings are on display at an exhibition of works by artists with disability, which is Chennaiites.