Your choice of viewpoint can make or break a shot. Shooting at eye level is fine for most pictures but for maximum impact you need to consider carefully how the angle affects the composition. Look at photos entered in competitions and your eyes will automatically be drawn to unusual viewpoints. I am not the world's best example of the most innovative photographer when it comes to photos with impact! The image here is of Trevethy Quoit, Darite, Cornwall and while I did get down low to maximise it's size, I should have laid on my belly and shot from ground level for a more dramatic view. If you want to emphasise the size of your main subject and make it dominate the frame then shooting from ground level is a must. Take along with you a black plastic sack to lie on and you won't get too dirty! By shooting low you can cram in lots of foreground, say, large rocks or a boat, and provided you have interest in the middle and the distance, you have the makings of a fine photograph.
You can shoot portraits from a low angle too but be aware that you will accentuate long jawlines from this viewpoint and this may not be flattering. It will, however, give you an eyecatching portrait. Generally with people shots it's best to shoot from a slightly higher angle and a little to one side. Get your subject to look at the lens but to angle their face away slightly. Cupping the face with both hands frames the shot nicely.
Be aware of any annoying distractions in the foreground and consider moving closer to your main point of interest to exclude them. Conversely, look through your viewfinder carefully and if the foreground looks empty then take another look and perhaps a move to the left or right or a few steps back might include some interesting element which will anchor the shot.
Above all, have fun with your hobby!
