Artist Zena Blackwell’s first solo show at Roath’s Cardiff M.A.D.E is a high contrast, intensely critical look at constructions of childhood and the domestic. I’m having a slothful Saturday. Late start, no bread for toast. No milk for coffee. I make my way, thankfully, to cardiff MADE’s beautiful Lochaber Street café. There’s a £5 minimum for card payments, so with little persuasion I order myself a latte and two slices of cake. The barista compliments my nails. I blushingly tell…