Step 1. Start referring to everyone around you as "mongrels".
Step 2. Get a good-looking piece of armor.
Step 3. Learn how to summon enough swords.
Step 4. Get into fights to boost your skill, don't forget to always make fun of the opponents if they're female or younger than you.
Step 5. ???
Step 6. PROFIT!
(optional step: you may steal a Seiba if you wish.)