Are clouds giving you trouble? Charlotte shows some quick and easy ways to get great cloud effects with acrylic paint and brush... not to mention a little finger painting too! Materials used: Derivan student acrylic: white, phthalo blue, red (cool), yellow (warm) Da Vinci Hobby Brush Flat size 30, Da Vinvi College Flat brush size 10, Da Vinci College round size 8 (very old and frayed!)