If your camera is flapping all over the place, your results are not going to be good. And they're going to be even worse at night. A good tip I find is to keep my elbows braced against my rib cage when taking shots.
#4: Take lots of shots
Don't just take one shot, take loads. Change your angle a bit, move around a little, see if people move into a better position.
What the camera captures is not necessarily what you saw or what you wanted to capture. Go back to the photo, hit that Edit button and play around with settings (that's the quickest and easiest way to learn what they do).
Want to get better at photography? Take more photos!