Ok, one banner. ( Sorry it's a bit plain. I'll try and do a better one when I have a little more time )
I realise this is quite big lol. I didn't size it because people want all different sizes, so, you can just right click 'n' save it and make it whatever size you want. Please don't link directly to this one! Save it and re-upload it. Thanks!
The following code is the one you need to use to make your banner a clickable image link.
<a href="LINK URL HERE"><img src="URL TO IMG HERE"></a>