How to Upgrade Items in World of Warcraft
Always upgrade your top-of-the-line slot equipment first. This includes chests, helms, and item upgrading legs. Upgrade your weapon following. Upgrade your belts, shoulder guards and boots. Upgrade your boots and gloves last.
Glyphs are able to be added to weapons and gathering tools as upgrade item components. Unlike other item upgrades, glyphs are able to be swapped out and removed.
Glyphs
Glyphs can be used to increase your character's strength in specific areas. They can be used to increase a character's secondary stat or item upgrader mod primary stat. Certain glyphs also come with fixed bonuses that become available when certain requirements for stats are met. For example, increasing critical strike damage after casting an offensive magic spell by 10 percent. These bonuses are worth upgrading Glyphs.