Forgot to mention...
Glyph of Insect Swarm is the highest DPS glyph. The two piece tier nine bonus makes Moonfire overtake it for that tier, but it remains second. At all other points in progression it is the single strongest glyph towards your DPS. Glyph of Starfall and Glyph of Focus are the two weakest glyphs which affect your DPS. You should drop Glyph of Starfall and pick up Glyph of Insect Swarm, that will net you over a 100 DPS gain.
Also for minor glyphs, you should drop Glyph of Typhoon. The knockback is something you will need in certain situations. The spell is a situational spell, it's not really much of a DPS increase to actually use it (given that Hurricane when hasted will tick faster than once per second and Typhoon when you reach the haste soft cap can't drop below the GCD minimum of 1 second). You only really use it when there is a need to knock things back such as Deathbringer Saurfang encounter. Minor glyph alternatives I would personally recommend Glyph of Dash, just nice to be able to run back faster.
"In anything, if you want to go from just a beginner to a pro, you need a montage." /w TankSpot WTB Montage for Raiders.