OP,
As stated by a couple others, I'd strongly recommend a re-spec to the cookie cutter BM 41/20/0.
The points in MM are really well spent. Lethal Shots and Mortal Shots are great talents. The Tier 3 talent Go for the Throat is also very useful. It helps keep your pet's Focus generating, so it can use its special attacks more.
Otherwise, don't worry about it too much. For your level, you have pretty good gear. You'll improve over time as you level, but for now you're fine. Once you start getting socketable gear, that's really when you'll be able to push your crit, by gemming for Agi or Crit rating. But, also be aware that big crits aren't always desirable (i.e., pulling threat) and gemming for AP and/or hit may be more beneficial for your dps.
I wouldn't necessarily recommend it, but one way you could up your crit now is to enchant your gear. If you have cash to spare, or have access to an enchanter, you could add quite a few enchants to your gear. For gear that will be replaced relatively quickly, however, I wouldn't really recommend it...just saying.