Focal Point

The focal point is the part of the photo the eye is most drawn too, the following link will take you to a website that describes the use of focal point in photography: http://www.worldstart.com/using-focal-points-in-photography/

This photo uses a shallow depth of field, making the raindrop sharp, and drawing attention to it, therefore making it the focal point.

The next photo uses leading lines, this is when objects in the photo draw lines towads the subject or focal point.