Anyone has iwagumi/rock scape guides?

[KeIgO86]

I don't know if this is the correct place to post this but I'm going to rescape soon and I can't seem to find the rockscape guides which I saw a few months ago. Those guides that show golden ratio, how the rocks should lean or be slanted in a certain direction and all. Anyone knows where they are?

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Search "aquascaping principles" in google, like
http://www.aquarticles.com/articles/...ing/index.html