Painting Skies With a House Brush
Art / Artist Related Issues
Most artists have probably never considered using a 3 inch house painting brush for their oil paintings, but doing so can get fantastic results with painting skies. A soft bristle brush enables wonderful blending of the sky colours. Just start by thinning your white paint with a blend of 1/4 artists turps or gum turps with 3/4 linseed oil.
Source: Arts-and-Entertainment:Painting