Just so it's on the same page, damosel linked this site under resources, which generators fake username tags for other sites as well.
One of the problems often people often encounter with the above is that the image floats too far up (I tried to solve that issue with a table -- YOU CAN IMAGINE HOW WELL THAT WENT). To solve that, this site adds the following style tag to the image:
You might have to use center with other, but... y'know. V. handy.