Do what? The image and link thing?
That's easy… just paste the full image url into a comment box and reload the page to see it transformed into a "(click to show)" link. Works with all image formats here (assuming the pic itself is hosted at imgflip)
1. click "show embed codes"
2. copy the Image HTML
3. remove everything but the image URL – https://i.imgflip.com/….jpg
4. Paste that in the comment box just like the rest of your text.
5. Post and reload page.