Keeping it natural
The main thing to remember about writing keyword-aware content is that, it should appear natural when you read it back. However, some writers are more skillful than others at making a keyword fit with the copy. If you have trouble fitting your keyword phrase into the copy in a way that makes sense, it's possible that you may have better results by outsourcing the writing to someone who specializes in writing for SEO.
If you prefer to write your own copy, you'll find that you will improve as you get more practice. Like anything else, writing SEO website copy is a skill that must be developed. Some people have a knack for it and pick it up quickly, while others require more time and practice to develop the skill.
No matter how skilled you are at writing a copy, you will undoubtedly come across keyword phrases that are awkward and will be hard to work into your website content. This is especially true for search queries that are written in the first person. It's not too hard...
