Anyone have any experience with Literally Canvas?

On my codepen I am currently using source code from Philipp Spiess
His original here

My modifications here

I think I need to fork? Sorry, totally new to all this as this is literally my first codepen.

I do plan on using the corebuild of Literally Canvas.

It will be part of my first major project, a PWA for manga drawing.

I do hope to include the regular FCC projects as a basis for my portfolio as well.

I would suggest asking this in the JavaScript section rather then project feedback.