I had some fun building an impasto background of subtle tinted whites, cutting around blooms and streaks of drippy paint. Sometimes I used a rag to spread the paint, sometimes a knife, sometimes my fingers or a brush. This one's not on canvas, it's on cradled wood panel...retaining crisper lines, brush/knife work than when I paint on canvas . I smear it with my gloved finger or with a cloth when I want less deliberate edges. I'm working on 3 rose paintings at the same time, trying out different surfaces. Working intuitively, for a looseness, a little bit messy...heh. heh.