Guild Banner

I Made my Guild, everything is fine, but
when im about to make my banner, do i need some matereal to make the
banner?, cause the accept button, once i selected all the compurs is grayed out, plz help me out, if i need something plz tell me what

one thing you may be missing, it takes 1000 gold to get your banner so start saving those coins and then once you have 1000 u can get a shiny new cape

Actually it's two bars (2) thus 2 platinum= 2000 gold

banners? are thos the same as the capes? sorry but im not that far into the gane yet.

I think he means guild cape.