Hi, I'm a fellow Shopify store owner, and I've been creating customized animated gifs, twitter cards, and interactive banners, etc. to promote my own store online and especially through social media.
If you have a need for any of that, reply to this thread and maybe I can help you.
Here's some more info from another Shopify forum posting. The link keeps you on Shopify: http://bit.ly/2rHI9oK