Often, if you Rewteet someone’s tweets a few times, they will notice, and eventually reciprocate. Try Retweeting a few people whose accounts have more followers than yours. If they Retweet you in return you’ll gain followers from the extra exposure. More followers = greater chance of being Retweeted.
–Include Links in your tweets
Science has proven that including links leads to Retweets. Observe this inforgraphic prepared by social media scientist Dan Zarella.