Click Turn Angle slider from 1 degree to 359 degrees. Click Up Arrow to use Heldlaw's original red dots. Cluck Down Arrow to use Purple squares. Click the green flag. From Heldlaw's Instructions: Please check out the nice remixes made by other scratchers: https://scratch.mit.edu/studios/27457559/ And of course, feel free to remix yourself!
Ponder patterns for Turn Angle, for example, does a 1 degree turn make a pattern similar to a 359 degree turn? 15 & 345? 100 & 260? and so on... To make a new sprite I simply used the Rectangle tool & placed it over a red dot. Copy & paste for the other 11.