To make the banner آپ click ترمیم and then there will be an option to add a picture and a banner. I usually just find a picture that fits the banner instead of taking a bunch of تصاویر and making one. But its your choice.
Oh I don't think that's an option آپ just have to find a banner that fits perfectly. But a really great trick is say your club is a movie (example: سٹار, ستارہ Wars یا something) آپ could go to Google and type in سٹار, ستارہ Wars Banner and تصاویر would دکھائیں up. It worked for me.