Updating the UI - A walkthrough with pictures.

[Lirkci_Prexus]

quick help. Im trying to change my spell icons to Luclin, im using default UI and i downloaded and extracted to my default UI. i log in and the spells changed in my spellbook but once i try to load it up to my line of spells i cant see the icon?? its just black but i put my cursor over where the spell should be and it says the spell i memmed example "Healing" but its not the heart.