Plant leaves with the alpha channel overlapping
On Plant models, it's needed that you model your leaves exactly around the alpha in the image.
If you have many rectangular leaves over each other, Cycles (and other renderers) have to make too many ray intersections and this makes the model unusable in production.
Check this lecture to understand this problem: The Holy Grail of Plant Creation - Julius Harling
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In this short article, we will talk about Fantasy Design. The BlenderKit team sees Fantasy Design - as a design not of a very high level. As a rule, novice designers do not have enough knowledge, but they have a great desire to do Fantasy Design.