I have practiced a ‘no shit, genius’ technique using gel medium and liquid acrylics. Simply spoon some gel medium onto a horizontal canvas and dribble strategically liquid acrylics, and dabs of solid acrylics as well, why not. Using a pallet knife, move the medium over the pigment and across the canvas as desired. A sponge is also useful for blending and texture.
The speed, coverage, and pleasing texture of this method makes me wonder why I’ve even bothered with a brush and pallet for non-specific areas of a painting for so long.