Ok - technical critique, your right the focus point should be on the closest subject, you have the center of the fan, the exposure is also too hot on the fan. It is very obvious a stobe has been used, you have it angled to the center and it is giving you the hotspot in the center, a diffuser will help. Seems like a single strobe set up. I would close down another stop and watch the position of the strobe, or another power level down, try to balance the background with the strobe so it is even.
Composition: I would get a little lower to get even more of an upward angle, Like Matt said the diver is the main problem, he is going away and his hands with the camera look a little awkward, comming into the picture would be better. In additon the surface of the water, the boat or even the sun would also add to this type of pic. Here is a quick fix on your pic, notice the fan is a little more balanced.
Look forward to your next try.
-Steve
