Post by Dunsinane
Are you looking to raid or PvP? If your focus is on instances and raids, you should not be in an SL/SL spec. That is for survival in arenas, and your job in PvE is to bring the hurt.
A link to your armory would help quite a bit, so we can give specific suggestions on where your priorities would be. But here's a rundown of an easy to gather and very powerful PvE set for warlocks without joining a single raid or relying on a bunch of lucky drops.
Head: Spellstrike Hood (crafted) -
http://www.wowhead.com/?item=24266Neck: Vindicator's Pendant of Conquest (PvP) -
http://www.wowhead.com/?item=33920Shoulders: Frozen Shadoweave Shoulders (crafted) -
http://www.wowhead.com/?item=21869Back: Cloak of the Black Void (crafted) -
http://www.wowhead.com/?item=24252Chest: Frozen Shadoweave Robe (crafted) -
http://www.wowhead.com/?item=21871Wrist: Vindicator's Silk Cuffs (PvP) -
http://www.wowhead.com/?item=33913or Wrist: Runed Spell Cuffs (badges) -
http://www.wowhead.com/?item=33588Hands: Studious Wraps (badges) -
http://www.wowhead.com/?item=33586Waist: Voodoo-woven Belt (badges) -
http://www.wowhead.com/?item=33291or Waist: Belt of Blasting (crafted) -
http://www.wowhead.com/?item=30038Legs: Spellstrike Pants (crafted) -
http://www.wowhead.com/?item=24262Feet: Frozen Shadoweave Boots (crafted) -
http://www.wowhead.com/?item=21870Rings: Ashyen's Gift (rep reward, Cenarion Expedition) -
http://www.wowhead.com/?item=29172Seal of the Exorcist (50 spirit shards) -
http://www.wowhead.com/?item=28555Seer's Signet (rep reward, Scryers) -
http://www.wowhead.com/?item=29126Trinkets: Icon of the Silver Crescent (badges) -
http://www.wowhead.com/?item=29370Scryer's Bloodgem (rep reward - Scryers) -
http://www.wowhead.com/?item=29132Starkiller's Bauble (quest reward) -
http://www.wowhead.com/?item=30340Darkmoon Card: Crusade (from Blessings Deck) -
http://www.wowhead.com/?item=31856Quagmirran's Eye (Heroic Slave Pens drop) -
http://www.wowhead.com/?item=27683Wand: Carved Witch Doctor's Stick (badges) -
http://www.wowhead.com/?item=33192Weapon(1H): Gladiator's Spellblade (PvP) -
http://www.wowhead.com/?item=28297Off-hand: Orb of the Soul-Eater (badges) -
http://www.wowhead.com/?item=29272This gives you:
108 spell hit (capped against anything that isn't a raid boss)
576 spell damage
806 shadow damage
158 spell crit (~ +7%)
You have 19 gem slots (3 red, 8 yellow, 8 blue) and also have added no enchants with those numbers. Proper gemming and enchanting will take you over 1k spell damage and approach the hit cap. You'll be able to cruise into T5 content and there are only a handful of Kara drops that are worth anything for you.