Spend a few minutes to come up with a list of what catches your eye when you look at a picture first. Then, spend about 40 mins to go through this video.
Start the video at 00:53:30.
If you have time, feel free to start from the beginning. The speaker talked about how to use wide angle lenses and telephoto lenses to capture images. But, I think the later half in the video has more info. The speaker is clearly a Canon guy. When you start from the beginning, replace the Canon lenses with your favorite’s, the rest of the content should be applicable to any camera.