marksman down falls

made it to 85 found rotation to be control narrow, you have to do the rotation to maintain focus and god forbid you dont crit on multi shot or its back to your rotation to regain your focus all over again. i have put aimed shot to the far action bar. extreem slow cast very high focus cost and poor dps. arcane is about as weak as aim shot but is an instant cast if you have any focus left after you sting,kill com.and chim, then its 2 steady shot to get haste oh dont forget to use rapid fire, if its not always on cool down,before steady shot, it helps steady shot cast faster to regen focus, cobra shot can regen focus but it has no haste buff like steady shot. and with the damage your pet is taking mend pet is in demand all the time
all in all i find the lack of focus to be the downfall of the hunter. the 3 new abilitys are cobra shot, same as steady shot with out haste buff, fox aspect dps starved, and camo cool looking but mostly useless. over all dps sucks only the extra pets are cool. so i am parking her once enchanting is maxed can,t recomend hunterclass as a choice try a mage or dk they seem to be blizz,s pet classes
Yeah, you're doing it wrong.

Aimed Shot is only used when you get 5 stacks of Master Marksman
Why are you wasting focus on Kill Command?
MM doesn't use Cobra Shot

MM isn't the optimal spec for 85, but it's better when you do it right.
First off, SV is the top DPS spec for dungeons and raids.
You never cast aimed shot unless MM procs. Ever.

The more gear you get, the harder your shots will hit.

I'm hoping this is because you were leveling enchanting, but you have expertise on your gloves, which is useless for a hunter. Use the cheap vellums off the enchanter vendor to level your enchanting on. At least then you can sell the enchant on the AH.

The page isn't loading for me right now or I would copy/paste the shot rotation for you. But go here:
http://www.warcrafthuntersunion.com/
and go to the CATACLYSM HUNTER GUIDES section to see everything spelled out for you.
Change the arcane glyph in your SV spec to kill shot. Also your SV spec needs reworking.

Cobra vs steady:
MM - steady ONLY
SV - cobra ONLY
BM - cobra ONLY