If you have a blank wall in your living room, a gallery wall is a great way to showcase pictures and prints that you love. Put together a collection of photographs that mean something to you, and mix and match art images or even 3D objects to make an unusual arrangement. This designer has followed a black, grey and white collection, and juxtaposed graphic prints with posters that go with the chosen theme.You can intersperse chunky photo frames in wood, textured bamboo, colourful cloth or simple black outlines to create a mishmash of patterns and forms that go well together. Tired of the look? Spend a bit of time and move them all around, to create an entirely different appearance.