I have been taking pictures using different techniques. here are example of 3 of those.
Repetition
Helps you emphasize patterns.
It shows the fence going on and on and gets smaller as you move into the picture.
Fill the Frame
The whole picture is your subject and details are more visible.
I like this picture because it shows the texture of the paw pads.
Leading Lines
Lead your eyes through the picture.
I like this photo because the metal shows the reflection as it leads you into the picture.