Connect the length of your breath with the depth of your tension. Breathe normally and start to tense and relax your different pieces of the puzzle and end with tension of your whole body and using the breath to relax one part at a time. Follow this by breathing slower and deeper (if you used one heart beat to inhale use three or more) and increase the depth of the tension along the length of the inhale and exhale. Note of the added tension increases your awareness to the tension in the parts that are near the purposely tensed part and learn to relax more by it. Relaxation > Awareness > Control.