choose preset models for models I have made or custom to make your own models. in the custom click on each of the variables to have it ask you what you want I usually just put in random numbers and watch what happens. the length is how long you want the lines to be until they turn, rotation size is how much you want it to rotate after it moved, and how many repeats is how many times you want it to repeat the draw a line and turn.
I made this on my own I just used scratch but I would like some help filling up the white space there seems to be a lot of that