Blueprint is a random drop that you can acquire while performing a corresponding crafting action. For example - novice armor gives no blueprints, when creating regular armor you have a small chance of obtaining a blueprint for a veteran armor and making veteran armor gives you a small chance of obtaining a blueprint for royal armor. These Blueprint can then be completely consumed to create a improved armor. After the creation your character forgets how to build these improved armor. For each ones of these six armor parts (helm, tunic, gauntlets, greaves, leggings, vambrace etc.) you'll need to get a blueprint.
252. Could you reveal any details about how does the "blue print" work and how to find in the game ? Will the new armor sets(you mentioned before) being added into the blueprint crafting system or just for MMO?Answer: Blueprint is a random drop that you can acquire while performing a corresponding crafting action. For example - while making Novice armor you've realized how to make a veteran one. Such blueprinted armors will be more effective and more expensive. That is something you will have to consider to wear on before battle.