XF 1.5 How to give an image in Postbit?

Back in vbulletin days, I used to have images for users that showed up in postbit, right under their names. It corresponded with the number of posts they had. So each 250 posts or so, they would move on to the next level, and get a different image. We had 'crowns' as the image, and they would get different color crowns as their post count advanced.

Can I do something similar with xenforo?