Local artist Subi Roberto works Monday on her piece called, We are Lightwalkers. Its a personal piece that was not commissioned. Lance Turner from Stein Paints is her sole sponsor. Most of the expense is out of pocket including the Sun Belt lift that she has rented for a month. 'Lightwalkers,' which covers 52 feet by 120 feet, is about 50 completed after one week. The mural is located between Northeast 14th and 15th Street on Northeast Second Avenue in Miami.