Talk:Sand Art/@comment-5334617-20151019144558

If you keep the stylus still in one place, an odd shape appears. Instead of X+RND(3),Y+RND(3) and X-RND(3),Y-RND(3), it would be a bit better to use something more like X-2+RND(5),Y+RND(3) and X-2+RND(5),Y-RND(3). It's still a shape that real sand won't make, but it's less odd-looking. Also, it would be better if you chose a pair of random points once, and used the same points for the top screen and bottom screen, otherwise the two screens can have slightly different images.