import media
baseball = media.load_picture('baseball.png')
lake = media.load_picture('lake.png')
width, height = media.get_width(baseball), media.get_height(baseball)

for y in range(0, height):
    for x in range(0, width):
        # Position the top-left of the baseball at (50, 25)
        from_p = media.get_pixel(baseball, x, y)
        to_p = media.get_pixel(lake, 50 + x, 25 + y)
        media.set_color(to_p, media.get_color(from_p))
media.show(lake)