Three things it does fast: ground deep blue, sharpen pale oak, wake a bedroom. Hang it and the room gets a still point one tall white bird, a wide field of blue, nothing else competing for attention. It suits a narrow stretch of wall: between two windows, on a chimney breast, above a headboard, or at the end of a hallway where you see it head-on. Keep the rest simple. Linen bedding, cane or rattan, pale wood, a few stoneware pieces, off-white or soft grey walls. Avoid crowding it with busy pattern or several small pictures either side; the open blue is doing the work and needs the space. Printed on premium fine-art paper, with the option of a real wood frame.