STG Studios

I posted this a few weeks ago, but I've updated my work and am looking for critiques and criticism/praise/etc. Just wondering your opinion on my work? Honesty is the best policy, any advice/tips/tricks/etc is much appreciated.

I use a wide array of cameras, all Nikon. Ranging from the D40, D60, and the D80. I've been working as a photographer for close to seven years now, I prefer landscapes and animals, but I'm currently enrolled in a few live-subject photography classes.