Hover your mouse over the four corners to find the variable sliders to change the tree, they should be self-explanatory - warning if you set sizeDownBy higher than 0.6 it can cause lag This is a fractal tree. Want to learn more, link in notes and credits
Idea from Daniel Shiffman (The Coding Train) check him out on youtube Code 100% by me link to the video: https://www.youtube.com/watch?v=0jjeOYMjmDU