Add social media share links

I’d like to make it easy for people to share an image they like on Social Media.
Ideally I’d like to share via Facebook, Instagram, and link to my Etsy store.

I’m using the Pro version.

My website is a blog and I don’t want to install a different theme.

Fine adding a style sheet or plugin to make social sharing possible.

Thanks for your help.

The page I need help with: [log in to see the link]