Another oldie but still useful! this was my first experimentation with the flood fill node which I used to make the cracks. Not supper accurate but it gets the idea across
This was also one of the first substances I exposed parameters on. The cracks and blood are both toggleable.
I made a quick scene to showcase the tile but needed another substance for the seat so I made the speckle texture. Maybe it's not the right way to go about making sparkles but I just made metallic flakes with a slight normal's offset. Looks cool either way and shows off real nicely on the seat!