From the self-portrait I learned that framecount is starting from 0 and there are other ways to define the time.
https://editor.p5js.org/Hansaglam/sketches/bJe0eiuiW
Also center mode affects mainly all of the shapes.
To add incrementals,
x-- and x -= 1 and x= x-1 are same
x++ and x += 1 and x=x+1 are the same
https://editor.p5js.org/Hansaglam/sketches/okXemMvAO
I have tried to create a rectangle that is half size of the canvas. The interesting part, the rectangle is being created by lines!
https://editor.p5js.org/Hansaglam/sketches/enPbed16w
I need to find a better way of creating multiple shapes :)