Always be aware of what is coming up in the background so that you can take advantage of it. Here, the city of Minneapolis rises out of the ground fog. Also, don't be concerned about taking the sort of pictures that would have been wasted with a film camera. You can do a lot with the latitude of a digital camera (and with Photoshop, which will be covered in another 101). Besides, if the picture doesn't turn out, what have you lost?