Fastest way to level up jobs like carpenter, weaver, etc?

[Jiggle]

The mats are too expensive to mass craft, and I don't know people who are level 50 to make me HQ stuffs to hand in :\

[Rustybicycle]

Best thing to do would be to get all your crafts to 15 for their cross class abilities. Figure out how each one works and when to use them and you'll be able to HQ most levequest items as you level. There are a lot of guides related to getting HQ items regularly. Look them up and see what works best for you.

[Cyndane]

if you have the leves available to you, I would say doing the courier version; it'll cost you some gil for the travelling (depends) but the xp payoff is generally pretty nice regardless of if you HQ the item or not.

[Simaril]

Carefully look at the leves. Some are much faster than others. Armorer offrs some extreme examples: one mythril ingot reqiures two mythril ore, and one item to craft, and the quest giver is very close by. Meanwhile other items take 6 or 8 times the materials, and as many more steps.

The triple turn ins are great for easy cheap items but can completely bog you done on the items that take more than a couple steps to craft.