1. Make a Optimized Twitter profile, focus your business in bio section and set an attractive background 2.Periodical tweet plan:Make a Periodical Tweet Palan.You may use Hoot Suite for schedule twitting. 3.Hash Tag marketing:Use Hash Tag .But make it limit .your hash tag should not more than 3. 4.link submission:try to submit website link.But not frequent.use Google Link shortener. 5.photo submission: A Photo can attract visitors easily.So try to use attractive picture. 6.Follow others: Follow others tweet 7. Re tweet Others tweet 8.research your competitor and plan your a new strategy 9.Reply others tweet by giving an appreciation.
I can add something. 1. Add RSS from thematic sites to your twitter-account (use tweetfeed). 2. Using tools for thematic following followers of your competitors (use tweetadder, twidium).