That's a great question! Are you looking to publish your campaign through our Social Share feature? Though Social Share is not an automatic feature, it does allow our users to publish their campaign on their Facebook and Twitter accounts. In fact I can see you use Social Share as well. If you are looking to add your Instagram page to Social Share, I apologize this is not currently an available feature.
It is however a feature request I have tracked in your account. Are you looking for your entire email to be converted and shrunk into a single image? Or would you want to choose an image from your email to share? Any additional information you may have would be really helpful as this is a feature request we are collecting feedback on.