If you go back and forth over the paint, brushstrokes will almost certainly occur. Rather, THINK THIN. Instead of using globs of paint, apply multiple thin coats. Also, brushing (or rolling) from one end to the other of your piece will avoid starting and stopping strokes.

The five strokes- Gradient Blending, Wet into Wet, Optical Mixing, Stumbling, and Smudging, essentially form what we can call the foundation for further progress on your skill set.

Paint rollers are designed to efficiently paint large flat surfaces, such as walls and ceilings. A paint roller can hold more paint than a paint brush and will distribute an even layer of paint quicker.

100% Polyester—Good for all paints, especially lighter or thinner coatings, 100% polyester bristles virtually eliminate brush marks. They also provide superior smoothness and robust paint capacity.