Improve your photography-- understand basic photography elements like color, composition, contrast, etc.
Be consistent with your style-- stay with your theme color and tone. Plan and design your feed before you post.
Socialize with your audiences-- don't comment things that have no meaning. leave or reply back thoughtful comments to your audiences.
Interact with the right people-- spend time socializing with those who are interested in what you do.
Optimise your bio and profile picture-- these are the first thing that shows to new people who visit your page.
Choose the right hashtags-- pick those has tags that have similar likes that you get on the top picked photo.
Tag the location-- surprisingly, this helps you to bring more audience than not tagging.
Include a call to action-- ask questions or make your audience to do something after reading your caption.
Collaborate with others -- if you know someone who does a similar thing that you do and has similar followers, give and get a shoutout or collaborate.