Ask HN: I built Autocomplete for Gmail extension, now what?

So I built this tool that I thought would be useful for people who use email frequently (think Sales people, marketers, lawyers, etc). Link: https://chrome.google.com/webstore/detail/autocomplete-for-gmail/moakamdcggbilpgbgoghnnfecmcmcocb

I launched it on the Chrome Web Store and I have around 33 weekly users, with 150 impressions every day. Any idea on how to get higher up ranking on the Web Store or just general feedback on the extension?