Addons: Pitbull 4

This can be used for raid frames as well, but I utilized it to develop my player and target frames. (I am still not 100% happy with how my buffs/debuffs look) I recently picked this up this week and a warning: this took me watching a 15 minute youtube guide to learn to effectively use. Quick tips: in the upper lerfhand corner config menu, you can change the setting to see a dummy version of a player/target/focus frame with lots of buffs and debuffs. You will also want to disable some of the frames in the 'units menu' (you really don't need your pets targets target, haha) This is also where you will apply the layouts you make in the future. Next, if you go up to the layouts menu, this is where you will perform 95% of your editing. The layouts made here will be applied to whichever frames you would like. For instance I have the buffs on my player frame twice as big as those on my target frame.

http://wow.curse.com/downloads/wow-addons/details/pitbull4.aspx

This is my character frame with Pitbull. Personal buffs
are shown and mana is shown as a percentage value.