8. To achieve turquoise blue water, shoot when the sun is directly positioned overhead(i.e., around midday).
9. Compose a scene with naturally occurring lead-in lines within the foreground and use them to guide the viewer to the main subject. An interesting but not dominant foreground also gives the image depth.
10. Shoot at the lowest possible ISO (e.g., 100) to produce the best possible quality images. Using a tripod will be a big advantage!