How To Guide: PlateBuffs & TidyPlates - icons above nameplates MOP 5.4 - YouTube
Moving Buff Icons - Possible? - Tukui
After the UI update the old ability icons look blurry and low-res. You can use Clean Icons - Mechagnome edition which AI upscales all abilities in the game for much sharper resolution :
Clean Icons - Mechagnome Edition : Graphic UI Mods : World of Warcraft AddOns