Those of you that are familiar may have seen these images in game fansite forums.  If not here are a few images to give you an idea.



You generate the achievement images for use in forums, from here.  Achievement Generator.



Note that for some reason that it acts oddly in Firefox, so you are best using Internet Explorer, you can save the achievement images as jpegs then.  You can either upload the images to you own web space if not there are many free image hosting sites on the internet. And can be saved to your signature.