There is no short cut to improve the reputation and followers of Steemit account. One have to be consistent and patience.
There are few tips while implementing on that reputation can be increased.
First of all you have to produce quality posts.
Secondly, participate by up voting the others in form of comments.
Increase your social network by adding people having common interest areas.
By getting more and more up votes
By participating in different bots.
You can also join discord channels and earn up vote from there.