1. We can only use Perfect World head fashion. The actual helmets used as equipment don't have any visual models in the game.
2. We can't make new own head fashion, because we don't have tools that would let us do it.
3. We certainly cannot import models from entirely different games like Tera. Even the fashion models from Jade Dynasty, which is the most similar to PW Wanmei game, are too difficult to import due to different character models.