Once Ha obtains a script, he makes "tiny" thumbnail sketches of each page, and then makes layout sketches on reduced copies of comic art board, two per page. It is at this stage that he works out the light/dark balance of the page. Though he says about 90% of his artwork are done without photo reference, he will sometimes photograph his friends posing as the central characters, or use a full length mirror to draw himself. He renders minor characters from his imagination. Irrespective of how much sunlight he has on a given day, he prefers to use a 500W incandescent photo lamp, though he believes a 500W halogen lamp is also adequate. He prefers to use a lead holder with H lead for sketching, and 2B lead for shading, which he sharpens with a rotary lead pointer, believing that such leads can be sharpened better than a traditional pencil. He blows up a scan of each page layout to 8.5" x 11", and draws "tight" pencils on top of these, which are then scanned and printed on 11" x 17" inkjet paper in faint blue line. He prefers Xerox paper because he feels that the surface of marker paper tends to get smudgy or oily. When modifying art in his computer, he uses Photoshop.