How to Run a Successful Instagram Contest or Giveaway : Social Media Examiner
Once you’ve run three to five contests, you’ll start to notice what resonates best with your audience on Instagram. Use what you’ve learned to help you get the best performance from future contests.
When you run a contest on Instagram, it’s important to comply with Instagram’s rules for contests. Also choose a prize that’s commensurate with the effort people will have to make to participate, and select a contest hashtag to use to monitor entries and conversations surrounding your contest.
When the contest is over, make sure you write “closed” on your post so people know that it’s no longer active, and archive the post so it’s no longer public. And finally, analyze your results to inform future contests on Instagram.