Click the green flag to see random terrain. Press space to show useless data. I made a sprite draw out the veins using pen. It was very simple. I then scanned it to a grid list and rendered it. --Update 04/09/2022 (or 09/04/2022 in the US)-- Added directional wobble.
Griffpatch is the source of all knowledge: https://www.youtube.com/watch?v=Pgt82G4Jxac I plan to expand this into a full game soon!