Leading Lines

This technique makes the reader feel that he is taken on a journey and he is traveling through the scene. There are all kinds of lines that can be used in an image, but in this specific picture the photographer chose to use a long straight line that turns into a soft left turn in the end of the image. It is an awesome technique and it makes the reader wonder what is beyond the image.
Cropping

Cropping is a technique that is used for photographers to center the public attention on the main component of the image. In this picture the professional centered the attention on the girl and the snowman. The rest of the picture gets kind of a foggy look. The blurry background creates the adequate stage for the main scene.
Rule of Thirds

This picture shows a perfect example of the rule of thirds. If you divide this picture in 9 equal segments by two vertical lines and two horizontal lines you will see that the most important elements of the picture are along these lines or in the point where they intersect.
Mimicking

I tried to recreate the same scenario of the picture in the rule of thirds. The wood background is almost the same color as the original fence. I placed a snow man on the left side and tried to recreate him with the accessories I found in my house. The light is appropriate. This is a good example of mimicking a picture.
Conclusion
All these principles contribute to the overall design. These techniques are simple to learn and use, and if applied correctly, it will give a special effect to the image you try to create. These images I got from the article How to make a Snowman: Tips for the Perfect Mr. Frosty by Juliana LaBianca. Photography is fun and I hope these tips will be helpful to you.