To know clearly, how the different brushes affect our mesh, let's choose a material well-suited for sculpting.
1. Load your mesh of the tree or the downloaded one. If you want to download the tree from the previous chapter, you can find the download address in the preface of this book. Load the mesh of the spooky tree by clicking Tool | Load Tool and then navigate to the respective folder.
2. Left-click on the material icon in the shelf on the left, as shown in the next screenshot. You can also find this material icon in the quick menu (right-click or spacebar):
3. Choose a material from the pop-up, as shown in the next screenshot. Everyone has his or her own preferences about what the ideal material for sculpting should be. Some like the default material, some don't. I personally prefer working with MatCap Green Clay while sculpting. Find your own favorite!