If you want to stipple cloud effects, you need a softer brush – a stencil brush would be too hard. But it must also hold up to the stippling procedure.
A brush from Winsor & Newton’s Sceptre Gold range is ideal – a Series 101 round in size 12 or 14 would be the best choice.
These brushes have excellent spring and good carrying capacity. They are a mixture of sable and synthetic hair, will hold up to a lot of use, and are suitable for acrylic, oil or watercolour.