Character concept for book

Here's something I threw up last night in a bid to loosen up and get back in the swing of things, I ain't trully satisfied with it, but then again when is any illustrator really happy with what they've drawn?? I tightened up on it pretty quick so it didn't come out as well as it could have but I feel like I'm getting back there...... oh and she will actually have clothes on in the next concept! She's a mean lady who's bit of an alpha female in a mostly male environment. She knows how to kickass!