Tyranbu, this link will take you to a site with lots of different Powers Auras Classic export strings.
http://powerauras.wikispaces.com/Class+Exports#Paladin Look over them and see what catches your eye. Some may be a whole set to copy/paste into Power Auras, others will be individual strings that you can mix and match. Sometimes this site doesn't have the kind of aura I'm looking for, so I'll google Tricks of the Trade Power Aura Export, for example. I found a site with a single string for a perfect Tricks aura that looks like the icon in my spell book.
As for my auras, I find export strings that use the actual button icon as the visual cue as opposed to auras, then I don't have to remember a bunch of different graphics, I see the same buttons I've been using forever. I only use the aura for my combo points.
Power Auras Classic has and editor, where you can copy/paste export strings into, and then resize/move them around your screen to your liking. I'd be happy to walk you through it.
Doh, one more thing. The buttons on the bottom and right side of our screens are the standard Blizzard WoW UI. I just keep them all on because I move abilities around a lot. I think the option is show action bars or something like that.