How do I make gil for crafts?

[Weltende]

So, HQ low level crafting gear? I'll try.
I'm trying to gather on my own everything I can, but Diremite webs can't be gathered, you can just drop them from those 8 Banemites in North Shroud, which is reeeeeeaaaaaaally loong. Or you can get those 4 from the leve while using 12 of them to craft the Velveteen Sarouels you need to give to complete it.
I'm starting to HATE the word "Velveteen".
Now I hitted lv30 and I have 9000 gil more or less. I had to buy Flax for the Linen Yarn because I'm botanist lv6 and Flax is lv31 I think.
I can easily HQ any Cotton gear, do you think I can sell that?

Go to Quarrymill and check out the level 20 leves there. One asks you to make Cotton Dress Gloves and one asks you to make Cotton Coifs of Gathering. Both of these leves can reward you with 10 diremite webs upon completion (occasionally they will reward crystals instead) and both can be completed with the cotton boils purchased from the guild vendor and the appropriate shards. The Cotton Coifs of Gathering leve can be completed 3 times over the span of one leve allowance, making it an extremely efficient way of accumulating Diremite Webs. These are not terrbile exp up until level 30 either, since you should be able to HQ everything fairly easily.

You can also take a break and level your Botanist a bit to 31 so you can start collecting Flax. It is not that time-intensive now after the 2.05 hotfix, and having access to unlimited, free Flax will essentially allow you to bypass both the Velveteen and Fleece stages of Weaver (with a few exceptions, such as the job quests that require you to make things out of Wool).

[YanDere]

Not sure how you have so little gil.

On Ragnarok shards are all around 25 gil each, earth ones are 40, so even Cordial+Byregot's Ward with the Miner Lightning shards aren't a good gil solution.
I'm now selling HQ Cotton Kurtas but they make 2500 each, so not too much.
I completed the main story but back then I was too lazy to walk so I spent nearly everything in teleports XD
I twice farmed Diremite webs and it's reeeally long and boring, you get 2 or 3 every 10 Banemites you kill.
I'm also a little poor in Lightning shards because lv30 Weaver recipes consume 4-6 each.
I have the best gear I can, I managed to make a lv27 HQ Coatee of Crafting as lv30 Weaver but now I bought the Twin Adder's Coatee and melded the HQ one as Materia in the shoes.
I can easily HQ Cotton recipes with normal materials so I can Quick Synthesize stacks of Cotton Yarn and Undyed Cotton Cloth, so I'm working on HQ Cotton gear to make gil.
Any other suggestion about gil?

[Gurpsmeister]

If your goal is to reach around 30K a day, your best and fastest bet is to literally run 2 wanderers palace. Trade in the tomestones for some potash, animal fat, peacock ore or the like and then turn around and sell it. Boom, you've made yourself 30K and then some.