Start with a mini band around both wrists, elbows bent to 90 degrees and upper arms close to your sides. Use a heavy mini band to be able to do this exercise in a static manner (muscle contraction without movement).
Bring your shoulder blades towards each other and rotate your hands outwards against the mini band and stretch the slack off the band. Hold the position and feel the tension between your shoulder blades and your posterior shoulders. Then relax.
