How to: Spell IconsIf you are a World of Warcraft player, it is possible for you to install custom icons for your in-game interface, much like installing an add-on. Any icon must be in the .BLP format or they will not work.
To install an icon, simply go to your interface folder and create a new folder called Icons besides your AddOns folder, the path should look like this:
World of Warcraft/Interface/Icons/
Placing any BLP icon in that folder will add it next time you load the game. Notice that unless the file's name is corresponding to that of an existing icon, it will not overwrite any icons and you can instead find it in the list of icons when creating an in-game macro.
You can browse my spell icon gallery folder for custom icons to download.
How to create your own icons
You will need two necessary tools (in addition to a photo manipulation program) to create icons. The first is a fan-made pr