To grow on Instagram, use relevant hashtags in your posts to reach new users. Popular hashtags include #love, #instagood, and #photooftheday. Also use popular photo filters like Normal, Clarendon and Juno to increase engagement. Engage with your competitors' followers by liking, commenting and following them. Organize your Instagram stories into highlights to entice people to follow you. Post user-generated content from fans to humanize your brand and drive more sales. For the best results, consider using an Instagram growth tool.