okay this might take a while...
http://i724.photobucket.com/albums/ww24 ... Mk2/15.png
I particularly like this one, it seems one of your strengths is drawing mecha in simple bust shots.
http://i724.photobucket.com/albums/ww24 ... img006.jpg
This guy has ...issues. the arms are drawn awkwardly. the left isn't in the same perspective despite it not looking like the shoulders are thrown back -which would give the arms a similar perspective angle as they currently have. the spacing between the shoulder and he torso seems to be exaggerated and not in a good way (I know that hard part about exaggerating things is knowing when you're doing it in a good way or a not-so-good makes-you-look-silly way)
the right arm 's shoulder is in a different perspective then the forearm despite the fact the joints are clearly not allowing it to happen. the arm itself is a little "too" straight and looks overall stiff and more like one big log then a appendage. also of note the entire perspective and positioning of the arm suggests that it's being slung forward (which combined with slung back left arm looks really awkward) when compared to the torso.
the easiest though ZOINKS-ly way to put it is that in this one you totaly failed in handling the arms. but hey at least it me saying it and not an art professor grading the piece. XD
http://i724.photobucket.com/albums/ww24 ... img008.jpg
It took me a little while to figure out what I was looking at. after that I imaged the character yelling "GP03 eat your heart out" or something to that effect. let me start by saying those are some really big thrusters. and it combined with the various other components makes me wonder where is thee room for the overly larger reactor to power it all. the problem with this design is it's too smashed together note how similar systems found in gundam have longer bodies and take that under consideration.
http://i724.photobucket.com/albums/ww24 ... img004.jpg
It's leaning forward in a not so good way...why are your mecha still going that? to remedy it in the front view move the right leg further from the left they don't look spaced out enough and it combined with the right side heavy gear leads to a leaning look for the unit. in the rear view...straighten it's posture it's obviously leaning forward.
now, onto the design elements. it's shoulders look overly big and bulky whiel not featuring any interesting detail and kinda seems to take away from mecha's design. I'd suggest lowering their top end significantly.
that torso mounted Gatling looks ridiculously and extremely tacked on. for one there's no real room for the gun itself, jsut the barrels sticking out and looking silly. if you're going to put a gun on the front of the mecha then I'd suggest mimicking the chest guns found on armored core designs, those don't look silly. the ones I'd suggest staying away from is heavyarms and these grunts from 00. heavy arms was a complete exercise in idiocy the chest guns must have taken up the majority of the upper torso cavity and given the fact the pilot was sitting in his cockpit mounted in the bottom of the ribcage that left very little room for any kind of system the mecha actually needed for general operations. and don't get me started on it's endless waltz version being agile as hell. the 00 grunt units (alf, anf, or something like that) looked more like they had a .50 call tacked onto their oddly designed torso it looked well silly.
I like the design of your arm mounted Gatling though it makes me wonder how many rounds you have stuffed in those little drums. my common suggestion would be to have the Gatling feed from a drum on the upper left back/shoulder or bum. (I said bum XD) the beam gun or what ever it is in the right hand looks less well designed. I'd suggest throwing it through some refining before equipping it to a mecha you bother to draw full bodied.
in the torso and legs I see some elements from your earlier design and I wounder if you're trying to make those parts seem to be identical to another one or if you just like those design elements.
http://i724.photobucket.com/albums/ww24 ... g010-1.jpg
please tell me this is your official mascot. because really she's damn cute and "animated" +10 if you pump out a finished product of her, let me color it (or color it yourself) and use the resulting image as your avatar.
http://i724.photobucket.com/albums/ww24 ... savage.png
lol everytime I saw these guys in FMP I thought a few things "what an unflattering design," "why do I think it looks like a frog?" and "is this one going to slide around on it's belly too?"