This Midnight Tailoring leveling guide will show you the fastest and cheapest way to level Tailoring from 1 to 100. I'll cover the trainer location, a shopping list, and what to craft at each skill range. I recommend checking the shopping list before you start so you can buy everything at once from the Auction House.
If you want all Tailoring recipes and knowledge sources, or help picking a specialization, check out these guides:
Recipes & Knowledge Points Specialization Guide & Builds
Tailoring Trainer Location
The Midnight Tailoring trainer is in Silvermoon City. Talk to them to learn Tailoring and pick up new recipes as you level.
Shopping List
These are the materials needed to level from 1 to 50.
- 66x
Bright Linen - 14x
Eversinging Dust
Leveling 1 - 50
1 - 25
66x 
Bright Linen Bolt - 66x Bright Linen
You need all 60 for the cloth armor and Imbued Bolts later, so craft all of them even after they go grey around skill 20.
Silverleaf Thread and 
Embroidery Floss are sold by the Tailoring supply vendor near your trainer.
25 - 40
14x 
Imbued Bright Linen Bolt - 28x Bright Linen Bolt
Tailoring Specializations
You unlock your first specialization at skill 25. Check out the Midnight Tailoring Specialization Guide for detailed builds and where to spend your Knowledge Points.
40 - 45
A lot of the recipes you craft here will be grey, but you should still craft each one once for the first-craft Knowledge bonus. We could have made some of them while they were still giving skill points, but we used those early points to make the bolts we need for this part, so it doesn't really matter.
- In your Profession window, click Filter and tick "First Craft Bonus". This will only show recipes that still give the first-craft bonus.
- Craft each recipe with the first-craft bonus until nothing is left in your profession book.
Equip the 
Bright Linen Tailoring Robe you just crafted. Depending on the order you craft them, you'll end up somewhere around 45.
I didn't include reagents for 
Bright Linen Reagent Satchel and 
Imbued Bright Linen Backpack in the shopping list because 
Fantastic Fur was not dropping on beta, so I still don't know how rare it will be or what the price will look like. If it's cheap by the time you read this, craft both here too. (I'll update all guides once I finish leveling.)
44 - 50
6x 
Courtly Shoulders - 12x Bright Linen Bolt
Make a few more if you didn't reach 50.
Leveling 50 - 100
For 50 to 100, you basically have two options: level slowly or rush it. I'll outline both methods below.
Slow Method with Daily CD and Patron Orders
I think the best way to level is to spend 5 Knowledge Points and unlock one of the bolt CDs, or both if you want to go that way. This lets you level your profession while also making some gold. With how Tailoring works right now, you won't hit guaranteed Gold quality for a long time, so there isn't much reason to rush to 100.
Unlocking Bolt CDs
Put 5 points into the Nimble Needlework root node, then pick one of the sub-specs. This is just an example, you can choose either one.
This will unlock one of these, depending on which one you pick:
- 1x
Sunfire Silk Bolt - 4x 
Mote of Light, 5x 
Sunfire Silk, 6x Imbued Bright Linen Bolt - 1x
Arcanoweave Bolt - 4x 
Mote of Wild Magic, 5x 
Arcanoweave, 6x Imbued Bright Linen Bolt
The bolt recipes give 2 skill points up to 80, so you'll get there in about two weeks. After that, things slow down, and 90 to 100 can be pretty slow because the recipes are green.
Alternatives for 90-100
Once you get to the 90s, you will probably have more epic recipes from vendors or specializations that give skill points, and you can complete Patron Crafting orders for those. They're random, but they often show up, so you only have to do a few of them.
Rushing to 100
If you want to rush to 100, or just speed things up, here are the recipes you can use:
50 - 65
30x 
Bright Linen Spellthread - 60x Imbued Bright Linen Bolt, 60x Eversinging Dust
This one will be green for the last 5 points, so this is just an estimate.
65 - 90
Make ~28 from one of these:
28x 
Sunfire Silk Lining - 168x Sunfire Silk, 56x Sunfire Silk Bolt
28x 
Arcanoweave Lining - 168x Arcanoweave, 56x Arcanoweave Bolt
Both recipes are drops, so you have to buy them from the Auction House. They turn yellow at 80 and you might need a few extra crafts from there, but the bolts are still cheaper than switching to profession gear this early.
90 - 100
~13x 
Elegant Artisan's Cooking Hat - 67x Mote of Light, 107x Sunfire Silk Bolt, 40x 
Radiant Shard
You can use any of the Elegant Artisan recipes here, I'm just using the Cooking Hat as an example. The recipe is sold for 150x 
Artisan Tailor's Moxie by the Tailoring supply vendor near your trainer.