First, Make a small straight line by a fast stroke. Then copy a frame then copy the line on top of the first frame. With the same frame, move the line upwards then copy it to the first frame. Repeat the same process until it's across the canvas. Then copy the lines side by side. Try to keep all lines on the canvas. To make it easier, Copy 2 or more lines onto the first frame. Repeat the process until it is across the canvas. Then delete the second frame and then add a new copied frame. Then turn the same line sideways and fill the pixels. You can make Pixel animation if you'd like.