Offset Fly

While lying prone on a swiss ball take your dumbell and press it up over the chest. Slowly and carefully shift the shoulder of the working arm off the ball to your ability. With a slight bend in your arm (keeping palm up) reach out from the midline of the body to your range and ability. Breathe out while raising the dumbell. This can be done super slow or normal speed, but continue breathing as usual if going super slow.

Keep your hips up and glutes contracted. Hips tend to become uneven if the utmost care is not used.