Search out those people and institutions on Twitter who are doing what you do and have become voices in the industry and follow them. Engage them in discussions from time to time and also make comments intelligently to their tweets.
This will help you build relationships with them and position you in their minds and the minds of their other followers as someone to take seriously. You might not be clear about how to find “Who to follow”. Just use the who to follow tab on Twitter and it will give you suggestions of who those you are following already follow. Make sure you follow the relevant people to your profession and the posture you would like to project.