Tip: remember, if you want your flat brush to retain a flat, held together shape, hold it at a low angle to your surface and hold back from the ferrule. If you want your brush to split, hold it close to the ferrule with the handle more perpendicular to the surface.
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| low angle and holding back from the ferrule |
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| handle up and holding the ferrule |
When you are floating, you want a low angle for a smooth application. Shade once, walk out, and let it dry. You can always go back when it's dry and strengthen or adjust your shading. If you continue to "play" in your tender acrylic paint you will be pulling it off and not smoothing it out. Then you have a bigger problem to fix.
