I just started selecting images to display in the forums infobox. There is no automation available for this, so it will be an entirely manual process. For better or worse, the selection will naturally be colored by my own personal taste.
I look at the basics when doing my selection, composition, light, color and detail. How well does the background work with the subject? Is there enough depth of field on the subject? Is the framing too tight (this is one of my own weak points when I photograph) or is it not tight enough? If some parts of the subject looks unintentionally cut off, then it is not going to work and so on.
The subject itself is probably less important to me, but still there should be a wow factor, that makes the photo stand out, compared to other photos of similar subjects.
Now I would love the hear what every one else think is important in a photograph!
Include gardening related photo examples if you like.
As this is a place to develop and fine tune photographic skills, it is nice to also include some basic shooting data, camera, lens, shutter speed, f/stop, ISO and so on, so we all can learn from how the photo was taken.
Personally I'm not going to post any actual examples, because I'm going to let the selection in the infobox speak for my taste. Post a photo that I like here, and I will select it for the infobox (the same is true for the image critique threads and all threads on this forum for that matter).