Professions in aion

I( an aion player)see many players in aion like to ask whether they are able to master all of the crafting professions. The clear answer to the question is no, simply because you can not be a jack of all trade with the Aion crafting system. introduction on some of the crafting professions are as follows:
From my point of view, alchemy is not a skill you should master with the exception that you are a Sorcerer or a Spirit master. There is a famous saying that alchemy is a skill you should work hard on until you have reached the 399 skill level. Before the point level, it is useless, so you are not required to learn it.
Cooking is a crafting skill. You are able to make lots kinds of food once you master cooking. It is similar with Alchemy, known as trade skill. However, you will be poor if you choose to be a cook, because the skill is easy to master and the materials are not that hard to obtain for most foods.
Armor smith is one more crafting skill. It is designed to craft heavy armors, and shields. In the case that your class uses any of the following: chain armor, plate armor or a shield, that it is time to pick up this profession.