Respond with personalised comments rather than a generic Thank You. Fostering a conversation helps build the credibility of your blog!
Grow your Blog Organically. Don't force/ask anyone to share, follow or comment on blog. Just focus on promotion.
Add your personality - If you are writing on a particular topic, there are a number of people who will be writing on the same topic. So you need to add that specialty to your blog to make it look different and to allow your readers to take away something that the others are not offering.