First we create the individual clover.
Then the stem
Finally we create minor variations of the petal's shape and coloring. and atlas everything together. I created a custom material warp node to keep this graph more clean and readable.
Left to right: roughness, albedo with alpha, normal, height, mask. Additionally AO and a few packed versions can be output as well.
Made with a mix of my own photogrammetry, procedural generation, and hand modeling.
I should really be commenting these graphs if I want non-substance designer folk to be able to read them..