Stir your paint before you begin, and don’t paint straight from the can. Obviously you would pour the paint into a roller tray if you were about to use a roller, but consider using a small paint bucket when painting with a brush. Its easier to hold, and decanting paint will keep the can free of the impurities (dust, wood particles, etc.) that your brush may pick up as you work. For more tips see us on YouTube “idahopainters”