How do you export an image/or in what format, once you have added a hyperlink to the image please, so that it appears as an image and not a file? To appear as a clickable link on Facebook and Twitter.
Usually people export as JPG format then upload to facebook or social media. Then assign HTML link there. Note: exporting at 1000 pixels at the longest side of your art is usually plenty. For Twitter, I export at 500 pixels max. size.