Curious as to bipedal proportions, especially, as there seems to be good stylized, even with larger than life heads, eyes, yet they look "good". Is there a chart like there is for proper anatomy for drawing? It'd be great to see a comparison even though I realize there are many forms of stylized. I think that'd make a great article.
Your link to the Substance file on polycount is broken, the correct link is: http://polycount.com/discussion/comment/2294007/#Comment_2294007
Daniel Thiger has released an overgrown jungle cliff substance graph (.sbs and .sbsar) on Gumroad. The pack features an organized full source .sbs file with comments.
Personal, Indie, and Studio Licenses are available. Substances and exported textures cannot be redistributed or resold unless as embedded components of electronic/interactive media.
Substance Designer 2017.1.0 or newer is required. Substance Player for .sbsar file.
Don’t forget to check out his other substances on ArtStation.