Drawing, printing, painting, listening, London’s hand is visible again. The Royal Drawing School’s 25th-anniversary programme makes drawing a public skill. At Serpentine South, Peter Doig turns the gallery into a listening room where paintings and analogue speakers share breath. At Studio Voltaire, It’s A Love Thing brings archival posters and new commissions into a living print room. Imperfection is not a flaw, it is a stance, a way to remember, to repair, to pay attention.