Take into account the colours that exist in your bedroom: doors, floor covering, the wall covering the landlord painted: Cherry Wood / Pinkish Beige wall covering / Eggshell walls
Buy big pieces, best in neutral: white Bed, Pastel Couch, Center Table, Coordinate the metals- Gold and Black
Select the Rug, Curtain Fabrics to enhance and repeat your colour sheme
Last set highlights with small deco like throw pillows
