If you use googlepages, you can make a new "page" where you type in all your shinies, etc. in there and then link back to that page in your signature. If you mean an entire new webpage not from googlepages, then you just create a page somewhere and link back in your signature, indicating what that website is somewhere.
There are myriad ways to show what you've got or what you want to show or tell other members via your signature. Hope that helps.