In the last chapter on Procedural texturing, you made the earth texture and added the detail of the leaf using nodes, wouldn't it be easier then to have used texture painting with a leaf brush??
Hello Inout. It's all about demonstrating lots of different ways to achieve the same thing. In Blender there is always many roads to take, it'll be up to you to get the feel of your particular situation and judge the best way to achieve your goal. Sometimes you're hours into working on something and you realize you took the wrong approach, and then you spend too much time trying to fix a mess and it's always better to start over. So it's very helpful to know all your ways available around a problem.