mehrannaseri
great job yo did
One part of auto hedge collections.
Idea using Corona scatter for scattering object on surfaces . You can get three variations of Branches in model . Model including two scatter setup ready for used .If you don't using Corona , i have Vray version include. Just using it with Forest pack pro , Multi scatter or Sini scatter.
I have small trick in youtube : https://www.youtube.com/watch?v=yFOsan7xVKo&t=14s
Happy rendering.