1. go to your Bio Thread and copy the link.
2. go to User CP and click edit Signature.
3. Use the insert Link Icon and paste your Bio link, when you do that you'll notice a new highlighted text, type whatever you want in there, that'll show instead of the whole Link address.
5. Use the Center/Bold/Italic to customize how it will look and where you wanna put it.
*I hope this helped you :3