This Madcat/Vulture hybrid mech is result of a freestyle mech biuld. The version on white has a couple of tweaks to it compared to the version on green. Some other pics on my flickr that would not load properly on here.
I really like all of the decals and the way that you've used the black & yellow colour scheme. The thick, rounded weapons arms look very practical and menacing, especially with just the small Technic pins as the barrels. The long, smooth parts work really well on the legs too.