Whether you plan to "borrow ideas" or plan on creating your own landscaping design, you should have at the very least a basic understanding of the principles of landscape design. Don't feel you have to apply every principle to every part of your plan. Just having an understanding of these principles can help you generate ideas and increase your creativity. Great landscaping lies in the eyes of its creator.
So, while the principles of landscape design are great guidelines to follow, don't feel like they're the "have-to rules" of landscaping. Abstract thought and creativity are allowed. Designing your own landscape can be both exciting and challenging. If you are considering such a project, here are some practical ideas and suggestions over here in this summary audiobook.