Your Project Page link is problematic (there's nothing there)...
I give it a go on modeling based on your concept art and I made this (Refer to attachment);
NOTE I : The model uses in-game Jaina, Sorceress, Paladin & Medivh textures.
NOTE II: The black clothing is used because I did not found an in-game texture that would fit the concept art's Green Hood (at the moment)...
Somehow, she reminds me of someone...