Acknowledge and appreciate your readers especially regular readers by replying to comments and visiting their work.
Presentation is as important as good content. Have attractive pictures, fonts, etc. on your blog to hook the reader.
Don't just type, talk to your audience. Blogging is way big a market on internet and people will like you if you do more than just providing information. Suggest, express, appreciate, criticize and have an opinion to build a relativity to a like minded audience. Make them feel that their visit to your blog matters to you.