If you've ever looked at the forums, you'll probably notice most people have those achievement get! banners on their signatures. Here's how to make your own:
1. Go here: http://mag.racked.eu/index.php
2. Click "create image"
3. Right-click the "ID List" and open it in a new tab.
4. To select the block you want to use for your banner, just select the ID number from the drop down list.
5. To use your own picture, select "Choose File"
6. Click generate once you're done
7. Copy and paste the Forum BB Code in your signature.
8. Show off!