As you look at the property from different angles, you will see things that could look better. You can move things around. If a shrub doesn't look good anywhere, toss it out. Everything should have a function which needs only unconscious acceptance, and either it does perform that function well, or it doesn't. You can accept what is there, you can replace it with something that works better, or you can open up the space altogether.
Space is an element too, and in some situations, it can look and work better than anything else.
Your local nursery will suggest plants, trees, and shrubs that will work for any condition that you can adequately describe. Change what you will, accept what will not be changed, and move on. Overall design of your outdoor space is important, but only to resolve the question of where to start. Second, do not try to accomplish too much too fast. To avoid being overwhelmed, limit the number of active gardening projects to three at any one time, and before beginning each day, look around your outdoor space.