Elemental shaman and DPS?

[Bollwerk]

Can you post your Mage setup?

I use this macro for Arcane, using GnomeSequencer:
PreMacro = [[
/assist party1
]],
'/castsequence [nochanneling]reset=combat/5 Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Barrage',
'/castsequence [nochanneling]reset=0.9 Supernova',
'/castsequence reset=0.9 !Arcane Missiles',
'/cast [combat,nochanneling]Presence of Mind',
'/cast [combat,nochanneling]Arcane Power',
PostMacro = [[
/use [combat]13
/use [combat]14
/run UIErrorsFrame:Clear()
]]

[sync00]

I use this macro for Arcane, using GnomeSequencer:
PreMacro = [[
/assist party1
]],
'/castsequence [nochanneling]reset=combat/5 Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Barrage',
'/castsequence [nochanneling]reset=0.9 Supernova',
'/castsequence reset=0.9 !Arcane Missiles',
'/cast [combat,nochanneling]Presence of Mind',
'/cast [combat,nochanneling]Arcane Power',
PostMacro = [[
/use [combat]13
/use [combat]14
/run UIErrorsFrame:Clear()
]]

It seems like you are giving up a lot of damage by casting Arcane Missiles after Arcane Barrage.