tried these also. little on the bright side but still nice. didnt know about the upside down omega sign being that but cool non the less.
this is what i got on my end.
warthog: 3/10
the turret and the rims need to be done. thoes are mine in the screen. you also missed some of the skin as seen on the pic.
shee: 6/10
a tad bright for me but to each his own. the design is nice but like i said its just a little bright for my taste. reminds me of sharks teeth for some reason
ghost: 5/10
i think the symbols were overdone on this and too big. just two small ones on the wings would have worked. its a tad pixelated but meh. no worrrys.
all in all good job on keep a constant theme going in it. just polish it up some and you should have a nice little triple pack going for ya.