Do you regularly look at your reach for your shop, checking your Etsy and social media stats? If not, you should!
Here's 'five shop stats you should be tracking' from the Etsy Seller Handbook: https://www.etsy.com/uk/seller-handbook/article/five-shop-stats-you-should-be-tracking/22398388701 which explains how to look at a few stats and why.
Here's some more information on Etsy stats of you aren't familiar with looking at them: https://www.etsy.com/uk/help/article/541
Social media can be a bit trickier to track. You can use a paid system like Hootsuite (https://hootsuite.com/en-gb/products/social-media-analytics) to help look at everything, or you could individually look at stats on each social media account yourself. For example, on Instagram you can switch to having a business profile, rather than a personal one, and then you can see 'insights' into how well your posts are doing (see more information on this here: https://www.facebook.com/business/help/788388387972460).
You can create yourself a spreadsheet to input some information - think about including how many times you posted on that social media in a month, and whether your follower numbers went up or down. Record which posts performed best so you can start to see a pattern of what kind of images and links your customers like to see. Think about which hashtags worked well too. And when you look back and see a social media post performed well, check out that date under 'specific dates' in your Etsy stats - did you see a spike in people visiting your shop from that channel? Did it result in favourites / sales?
Team Member Chibi Chi Designs has shared a social media planner which could help, with space to include your social media fans / followers at the beginning and end of each month. Check it out here: http://chibichidesign.blogspot.co.uk/2016/12/getting-to-grips-with-social-media.html
Make sure those social media posts are converting - by keeping track of them you can see which channels and which style of posts are worth spending your time on!