Note: Any class, with the exception of beginners, can get the maker skill
Level 1:
You must be level 45 to acquire Maker Skill Level 1.
The Maker skill is acquired through NPC Moren, found in the Weapons and Armour shop of Magatia. When you go to see Moren, he will give you three quests you must complete:

1. Go see NPC Hughes the Fuse who can be found in the hidden room, entered through B2 in Orbis Tower. Hughes will proceed to teach you a lesson, I advise you pay attention.
2. Go see NPC Carson, the Alchemist. Carson can be found in the Zenumist Society building. Again, Carson will proceed to bore you with text. Again, I advise you pay attention.
3. Go back to NPC Moren, and listen to his lesson. Once again, pay attention!

Once you have completed all three lessons, talk to NPC Moren again, and he will proceed to quiz you on the lessons. This is why you should抳e read all that text. But no. You thought you were too important. But that抯 okay, cuz its a really easy quiz and you can guess your way through it no problem. Congratulations, you now have the maker skill!

Level 2:
You must be level 75 to acquire Maker Skill Level 2.
Huzzah! You抳e reached your third job advancement! First of all congratulations on that. Second of all, its time to upgrade your maker skill!
Head back to the Magatia Weapons and Armour shop, and talk to NPC Moren. You will receive a quest to create an intermediate monster crystal 1. Gather up 100 etc drops from a monster level 71~80, and create your monster crystal. It is reccomended to use Homunculus & Site drops, as they can be found right there in Magaita Talk to NPC Moren, finish the quest, and go show off your level 2 maker skill.
Note: There IS a chance of failure on this quest. Moren will NOT always accept your crystal. I got it first try, but some people had to try up to 6 times. Just keep at it.

Level 3:
You must be level 105 to acquire Maker Skill Level 3
Well, level 105. 15 levels away from the 4th job advancement. Your getting pretty strong right now, and standard items just don't cut it. This is where the maker skill is at it's best.
To get level 3, head back to the Magatia Weapons and Armour shop, and talk to NPC Moren. Moren will treat you to yet another long, drawn out conversation you really don't care about. Once he's finished, talk to him again and acquire Doodly Paper. Next, open up your maker skill window, and do the following:
1. Select etc. from the first drop down menu
2. Select etc. from the second drop down menu.
3. Combine 6 gold plates, 2 steel plates, 1 Lidium, and the doodly paper.
4. Receive Gold Anvil.
5. Talk to NPC Moren.
Moren will give you the Maker Skill level 3. You can now socket 3 gems, make every item (assuming your level is high enough) and make reverse and timeless equips!