Some Tips for Better iPhone Photos

"In the five years since the iPhone Photography Awards (IPPA) launched, the iPhone camera has gone from disappointing to out-snapping Nikon as the most popular camera on Flickr."

Awesome photo. I was pleasantly surprised to learn that one of the most common rookie mistakes is "Gratuitous use of iPhone processing apps." There are so many it's hard to figure out the best one for you, and to learn that the iPhone camera is just fine for capturing those "in the moment" photographs, I won't worry about finding that perfect app. I just need to practice so I can enter this contest! What are your thoughts? Have you found an app that really does make you a better iPhone photographer?