“For an artist, greatness happens when you can take something organized and make it feel like it was improvised,” says dance teacher Helena St. Rogers in the drama series, Pose. In painting, you may wonder how to do this without ending up with an aimless jumble. Improvisation, the act of composing without a plan, unfurls in real time but rests on an armature of known structures and experiences, with the goal of getting to a breakthrough. Just as a jazz musician takes a solo over a grid of eight or twelve bars, your improvisation should have a beginning, middle and end.