When I started in to photography again after retiring, my typical picture was simply a snapshot of what I was seeing. I've expanded that a lot with my tripod, slower waterfall shots, and close-ups. But over the past year I've pushed myself in new directions just to take different sorts of photos, and this has really expanded what I look for in a good photograph. One way to do this for me is through participating in blog memes.
Memes are simply fun too, but for me, participating in them has expanded how I think about photography, especially about keeping an eye on the sun and time of day for what you wish to photograph.
So I've expanded my thinking about what sorts of photos to take, and what to look for when out chasing photos, a lot, by trying to take different sorts of photos from my usual scenic snapshots. Now I watch the weather, the sun and sky, and the time of day like a hawk when planning photos!