I really like the black outline, it gives the piece a little more style

Very very good art. I love it.
It reminds me of mariposa.

Thanks for the comments! I personally like the framerate, but I can see how it'd look at slower speeds.

The shading is great. I'd make her face move a bit though, she looks more robotic than the mecha

 I really like this, excellent design and rendering but I agree with ADrawingman, a slower animation cycle would look better.

 I really dig the design but I feel as if the animation goes to fast.