Problem with Steam connecting to profile

You guys have probably answered this 100's of times before but I'm having trouble with connecting my Steam account to this site, I follow the instructions you have provided but they don't seem to work. I've tried setting up a custom url but can't find how to do so
 
The url which is linked to my profile is which i've tried to use is:
 http://steamcommunity.com/profiles/76561198019531241 
 And if needed my account name is BigHandInSky however I've changed the nickname to Mr. Hankey The Christmas Poo. 
 
Any help would be appreciated 
Also if you need any more info tell me

Open steam > Community tab > my profile > Right side Edit my profile > scroll down a little it'll have the URL thing there > change that add it here

Ok thanks for that

Jesus H, I was trying to figure out how to do this for at least an hour. I didn't even ask, but thanks bro.