Arcade Button

i am trying to get a arcade button on the nav bar how do you do it

go to your ACP(Admin Control Panel)--> General Admin --> Header

from there you can upload an image that you want to appear as the Arcade link * then reorder in what order you want it to appear

but it says couldnt redirect url or something like that

What exaclty didyou enter and where?

i get the code for the pic and copied the url that i wanted from the address bar

Picutre selecte: http://Your_picture.com
Redirection URL: Where it's spposed to bring you to
Alternative Text: Arcade
Open in blank page: As you see fit

i did that but it didnt work