If this is your profession then I think you should go for it. Remember to let your readers know about your qualifications as this gives added credentials and authority to your opinions.
Well, if you think you are good at it and can provide useful information to your target visitors then do what you think is right and proper. Focus on quality and eventually offer your readers something that they would like to see in your next post. Don't mind SEO and other technical things if you are just starting, what is important and make useful content for your readers.
I always look for blogs that have integrity. For me that is shown by content that comes across as written form the heart and not just something said in technical terms from the brain, if you get my drift. I think your personal touch will be vital to help build up rapport with your audience. Write as if you are writing to a friend or people that you know. The old K.I.S.S. (Keep It Simple Son)never goes amiss either. Let me know when it's up and I'll have a read