What youll need
-Gimp (Free paint program that is easily customizable)
-eepanels 2 (to put the art in and make it appear on your screen)
Getting Started:
First open Gimp and select NEW under folder.
Make it 512 X 512 and transparent with RGB comolring as seen here
Then create your image
When your done save it anywere as a .psd file
Then save it as a TGA file in your eepanels folder
Then open wow and go on your char. On your mini map there should be a new icon. Right click it and go to new and select GLOBAL SETTINGS.
Then right click it again select advanced option and go down to panel settings and in there select name and name your template.
Once you named it go to global settings then scroll down to background texture custom texture and type in
Interface/Addons/Eepanels2/"Name of your artwork Here"
And there you have it you very own custom art