A handy way to improve your grammar and developing a sharp eye for detail is to do some freelance proofreading work. There is no shortage of people who require the services of a proofreader. Proofreading helps to keep your mind sharp by not only exposing you to various writing styles and thought processes, but also by helping to develop a sharp eye for detail. Inevitably your grammar improves and you become more aware of sentence structuring. It was through some proofreading work that I finally learned what the split infinitive was. We all have our habitual mistakes we make during writing. Whether it is sloppy sentences, concord errors or the dreaded apostrophe, we all make mistakes.
Proofreading on the side helps to create awareness of how we use language as writers. In the end it helps to enhance our writing.