You can add “About Me” Page On Your Blog right hand corner. I think this will help you to express your expertise area as well as your contact address to the other people who read your articles or browse your site.
In problogger.net I find--
There are four main questions that readers want answered on your About Me page:
- who you are…
- your expertise and how it addresses…
- their problem or goal, and how they can…
- contact you