Editing someone else's writing can be really helpful for both the writer and me. First off, it's a chance for me to get better at writing myself. When I go through someone else's work, spotting mistakes and suggesting improvements, it helps me understand grammar and style better.

Secondly, editing is a good way to work together and understand where the other person is coming from. Giving feedback and making suggestions shows that I'm trying to understand their point of view. It's like teamwork, and it makes us better at communicating.

Also, when I edit someone else's writing, I get a fresh look at things. It's easy to miss mistakes in my own writing because I'm too close to it. But when I look at someone else's work, I can see things more clearly.

Plus, editing teaches me to pay attention to details. I have to look carefully at every word and sentence to make sure everything makes sense. It helps me get better at catching mistakes and making things sound right.

Lastly, editing someone else's writing can be fun and satisfying. It's like solving a puzzle or fixing something broken. When I see the improvements in their work because of my suggestions, it feels good.

So, editing your writing would not only help you improve, but it would also help me learn and get better at writing too. It's a win-win situation!