I doubt the method is all that new, it's just that not many people are stupid enough to make an image of that size out of little trees. It's only really worth the time and effort of doing such a thing if you have some large forests you need to put it or if you have lots and lots of forests to do (such as I will have over the series of Vaniya maps I no doubt will do). But once it's done it's done, so hopefully I can now place all my large and medium sized forests really quickly. It will probably still be quicker to do small forests with individual brushes.

Anyway, it wasn't a lot of fun to do I can tell you. Hehe.