This is the starting brush. It has a flat, rectangular tip with high pressure sensitivity.
A common mistake when using "advanced" brushes is overusing the texture. marc brunet advanced brushes free work
Marc Brunet’s flagship brush set (often sold on Cubebrush) is designed to solve specific problems concept artists face. This is the starting brush
Marc offers a free "Demo" version of his brushes on his website, Art School for Digital Artists (CubeBrush.com) . marc brunet advanced brushes free work
Free Advanced Digital Painting Brushes by Marc Brunet