Tradeskill Mastery
Collection Mastery
             This affects Mining, Fishing, Gathering, Logging, Disenchanting & Ancient Research. How collection mastery works is the more you "collect" of each material from each trade, you gain Mastery Exp towards gaining Mastery levels for that specific material.
             On the Trade Skills page. You will notice a small number in the top right hand corner of materials from the trades listed above. If you click on the Material it shows a progress bar and the Mastery Level of that item. (and associated bonus, if any)
 
             All Bonuses also work outside of Rings, Food Buffs & Global Perks. (For Example: you could get a Mastery DR +1 AND Global Perk DR +1 on the same drop making it [Copper Ore] x3)
 
             Here's the Breakdown of the Mastery Bonuses by Level. Each Bonus is applied directly to each Material. So if you have mined a lot of Copper Ore and your Copper Ore mastery has gone up a few levels. You will get the bonuses when you mine further Copper Ore. 
 
Collection Mastery Bonuses
             Level 1: No Bonus
             Level 2: 5% Drop Rate +1 
             Level 3: 10% Drop Rate +1
             Level 4: 15% Drop Rate +1, 2% Drop Rate +2
             Level 5: 20% Drop Rate +1, 5% Drop Rate +2
 
Collections Needed to Level 
 (Each collection (regardless of drop qty) = 1 collection)
             Level 2 = 500 collections
             Level 3 = 1,000 collections
             Level 4 = 2,000 collections
             Level 5 = 4,000 collections
 
Pattern Mastery
         Pattern Mastery affects the pattern trades: Enchanting, Smithing, Inscription, Cooking, Jewelcrafting & Alchemy.   There is a maximum mastery level of 5. 
 
       The Pattern Mastery Exp is a dynamic system based on how much exp you receive from each Pattern. So patterns that grant more EXP will need fewer combines in total to up their mastery level. But as a whole patterns that give more exp use much harder to get materials than the lesser patterns.  Mastery Create Rate Bonus works on any pattern, even containers, etc.
 
       Your Mastery Level is shown in your pattern listings & on the Masteries Page. View the pattern to see your Mastery progress into it's current level.
 
Pattern Mastery Bonuses
       - Level 1 : No Bonus
       - Level 2 : 5% Create Rate +1
       - Level 3 : 10% Create Rate +1
       - Level 4 : 15% Create Rate +1, 2% Create Rate +2
       - Level 5 : 20% Create Rate +1, 5% Create Rate +2
 
Pattern Mastery Level Breakdown
Pattern mastery is all based on each patterns base exp value.
To figure out "Base Exp" for a Pattern.  Take the current exp reward for a pattern and divide it by it's level.  For example: If a pattern grants you 100xp @ level 10.   100 / 10 = 10 base exp.
 Patterns that give 2 base exp or less
       Level 2 : 500 combines
      Level 3 : 1,000 combines
      Level 4 : 2,000 combines
      Level 5 : 4,000 combines 
 
Patterns that give 3 base exp - 6 base exp 
       Level 2 : 350 combines
      Level 3 : 700 combines
      Level 4 : 1,400 combines
      Level 5 : 2,800 combines
 
Patterns that give 7 base exp - 14 base exp
       Level 2 : 200 combines
      Level 3 : 400 combines
      Level 4 : 800 combines
      Level 5 : 1,600 combines
 
Patterns that give 15 base exp+
       Level 2 : 125 combines
      Level 3 : 250 combines
      Level 4 : 500 combines
      Level 5 : 1,000 combines