Leatherworking QuestsAll Manufacturing Professions have their specific quests, in order to progress your skill and get some new patterns. Here are the LW ones and the mats necessary for them:
See
Pratt Mcgrubben at Feathermoon Stronghold in Feralas for the quests
The first quest
Wild Leather Armor just requires you to bring him:
10x Thick Leather
This opens up 3 quests where you need to make him stuff:
[Wild Leather Helmet] Nightscape Tunic x2 14x Thick Leather 4x Silken Thread
Nightscape Headband x2 10x Thick Leather 4x Silken thread
Wildvine x1[Wild Leather Shoulders] Thick Armor Kit x6 30 Thick Leather 6 Silken Thread
Wildvine x1[Wild Leather Vest] Turtle Scale Breastplate x2 12x Thick Leather 24x Turtle Scale 2x Heavy Silken Thread
Turtle Scale Gloves x2 12x Thick Leather 16x Turtle Scale 2x Heavy Silken Thread
Wildvine x1Materials Needed:78x Thick Leather
40x Turtle Scale
14x Silken Thread
4x Heavy Silken Thread
3x Wildvine
Handing these in then opens up 2 more 'supply quests:
[Wild Leather Boots] Nightscape Pants x2 28x Thick Leather 8x Silken Thread
Nightscape Boots x2 32x Thick Leather 4x Heavy Silken thread
Wildvine x2[Wild Leather Leggings] Turtle Scale Helm x2 28x Thick Leather 48x Turtle Scale 2x Heavy Silken Thread
Turtle Scale Bracers x2 16x Thick Leather 24x Turtle Scale 2x Heavy Silken Thread
Wildvine x2Materials Needed:104x Thick Leather
72x Turtle Scale
8x Silken Thread
8x Heavy Silken Thread
4x Wildvine
When you hand those in he'll give you a quest to take a letter to the LW trainer in Darnassus to get the Pattern for
[Wild Leather Cloak]And that's it

So...
Total Materials Needed:192x Thick Leather
112x Turtle Scale
22x Silken Thread
12x Heavy Silken Thread
7x Wildvine
You can, oddly enough, buy the thread from Pratt himself.