Novice photographers often struggle with the mechanics behind the art form, trying to catch that one elusive shot that transforms their work from the straightforward to the sublime. Although it’s great to know how to work your camera, there’s a lot more to photography than memorizing what situations call for ISO 100 versus ISO 1600 or constantly tweaking your aperture. Without a strong understanding of composition, all the technical details are meaningless. Tips for Better Photographic Composition
The lines means that you can divide the picture in vertical en horizontal lines. A picture has more value if the object is on the left or right side of the picture. Some pictures are taken under an angle. The object follows oblique lines. Lines can also help to lead to the main object of the picture, like a small story. Some psychological explination: as human we mostly move our eyes from the left side to the right side of the picture if there are no 'guiding' lines. If there are oblique guiding lines like a railing or a railway, the eyes will follow the path to an object. That's what our mind does wen it scans a picture. Also colors does something with our mind for example, red colors jumps more in the eye than other colors.