Three things it does fast: ground mustard yellow, sharpen pale wood, wake a kids’ room. The colour is doing the heavy lifting here, so a plain wall suddenly has a focal point without any extra clutter. Hang it above a low bookshelf, a changing unit or a small desk, where a child can actually see it at eye level. It sits happily with pale wood, painted furniture, cream bedding and a few mustard or dark green cushions picked out to echo it. Don’t crowd it with lots of busy pattern or a wall of alphabet charts the flat shapes need clear space to read properly. On fine-art paper the colour stays flat and even, which suits the graphic style.