We've just made our 1st Instagram post - any tips on how to get to initial 100 followers?

So far we've mainly been active on LinkedIn and Product Hunt. Due to my previous experience, LinkedIn was a comfort zone, while Product Hunt has been a great addition for the past 10 months. Now we decide to try out a new channel and are looking to learn the ropes. I'd love to get your insights, tips, and tricks that you've been using to grow on Instagram. You can check us out here: www.instagram.com/collabwriting/