I think the most important is to stay consistent - something that I am always striving to get better at. After that, be sure you are writing about things that matter to you. People can see through even text most times. I find when it's genuine people respond more. Also don't be afraid to step out of your niche...there are lots of things to write about and no rule that you have to only talk about one topic. Also, listen to the feedback you get from people who have been doing this longer than you! Always be willing to get better :)