11) Choose your new mastery and enjoy the difference.
Notes: DO NOT PLAY MASTERIES MOD WITH CHARS THAT PLAYED NORMAL TITAN QUEST IMMORTAL THRONE BEFORE, this will screw up their skill tree, and
DO NOT PLAY NORMAL TITAN QUEST IMMORTAL THRONE GAME with MASTERIES MOD CHARS either!!! That will most probably also screw up their skill tree. Keep the chars separated. That's why I suggested: give very identifiable names to your Masteries Mod chars, because they are otherwise indistinguishable from the Normal TQIT chars.
After you have created and played a Masteries Mod char, you have always to follow steps 1, 2, 4 and 8 of the previous post to enter the Masteries Mod with your existing Masteries Mod char. Otherwise you will play Normal Titan Quest Immortal Throne with it... and screw up your Masteries Mod char.