Choose a brush that is well made for your watercolor painting. Select brushes for watercolor made of fine hair such as sable, pure red sable or other hair fibers.
Select the right handle for your brush. Watercolor artists tend to use a standard handle brush. Plan on finding a brush with a handle length of approximately 6 to 7 inches. To create detailed work artists generally like to work closer to the medium.
Create better brush strokes by using a sable (or similar) fiber material. This will help you perform better techniques since the sable head retains more of the paint when you touch the paper or canvas.
Consider using a good type of brush such as a Kolinsky. This natural hair brush has a pointed round tip. Watercolor painters like this brush since it has a good slender tip and provides a lot of flexibility.
Explore other types of brushes for watercolor use. Some less expensive offerings include squirrel hair bristles. You can utilize this brush for simple techniques, but overall it's pretty limiting.
Learn about the watercolor brushes currently used by artists. Peruse the art department of local colleges to find out about seminars, workshops and events. Get supplies and watercolor brush information at Blick Art Materials online (see Resources below).