does anybody of you know a good tutorial for non-rectangle brushes? I mean where I can learn how to align poly-sided brushes better and how to use vertex-mode and edge-mode effeciently? I think I figured out how edge-mode works but I’ve no idea how to handle vertex-mode. I’d like to create a rocky wall but I’ve difficulties with these modes and can’t align the brushes as I would like to.
As far as possible, try to avoid manipulating brushes whose initial shape is any more complicated than cuboids ("rectangular") or triangular prisms (what you get when you slice a cuboidal brush across the diagonal of one of its faces). Manipulating more complicated shapes is risky and prone to errors, and nearly always unnecessary.