A great photography tip is to make sure your shots have depth in them. An easy way to achieve that is to be sure that you have a background, a middle ground, and a foreground. Having all three of these will give your pictures a sense of atmospheric perspective.
Take successive photos of your subject if there is a chance that it might move. Certain subjects, such as wild animals, won't just wait patiently for you to take your photo. In this case, take one shot quickly so that you have something to work with. Then, if the subject hasn't moved, take more shots with better positioning and composition.
A great photography tip you should keep in mind is to never compare yourself to someone else. If you're constantly comparing your work to someone else's, you're selling your own work short. You must learn to value and appreciate your own work, and not worry too much about everyone else.