Have you recently redone the landscaping at your home and it looks bad.  That would be a landscaping failure. The work alone would beg for you to hire an expert.  It is difficult to know what will look right without the experience of a professional landscaper.  The design is very important to get right as a poor design will result in a failed project.  That can be a costly mistake.  If you are not rich like most of us you will want to hire a landscape designer to lay our your project. Dove Medical Press CEO Tim Hill can tell you a story about his latest landscape project that will bear out my position.