Help with armored space warrior

Am using HeroMachine 2.5 and have come up with the following:

You can load it up with the code in the spoiler box below.
2.5b7*m1*Andraxus Escroga*Hair:Standard,fraBlank,FFFFFF,FFFFFF,100,100,22,Eyebrows:Standard,fraBlank,FFFFFF,FFFFFF,100,100,20,Eyes:Standard,fraBlank,FFFFFF,FFFFFF,100,100,19,Nose:Expansion1,fraBlank,FFFFFF,FFFFFF,100,100,30,Mouth:Standard,fraBlank,434343,434343,100,100,17,Beard:Expansion1,fraBlank,181818,FFFFFF,100,100,25,Ears:Standard,fraBlank,FFFFFF,FFFFFF,100,100,18,Skin:Standard,fraBlank,181818,181818,100,100,6,Mask:Glasses,skigoggles,280101,280101,100,100,21,Headgear:Fantasy,gladiator,181818,181818,100,100,27,Undershirt:Shoulders,tooth,181818,181818,100,100,7,Overshirt:CapeFronts,fraBlank,434343,000000,100,100,8,Coat:Expansion1,scifi,181818,280101,100,100,24,RightGlove:Expansion1,scifi,181818,280101,100,100,16,LeftGlove:Expansion1,scifi,181818,280101,100,100,15,Insignia:Standard,fraBlank,280101,181818,100,100,31,Neckwear:Expansion1,fraBlank,181818,181818,100,100,23,Belt:Standard,fraBlank,FFFFFF,FFFFFF,100,100,14,Leggings:Overleggings,twotone-right,181818,181818,100,100,9,Overleggings:Standard,twotone-left,181818,181818,100,100,10,Pants:Expansion1,scifi,181818,280101,100,100,11,RightFoot:Expansion1,scifi,181818,280101,100,100,13,LeftFoot:Expansion1,scifi,181818,280101,100,100,12,Back:Standard,jetpack,280a0a,181818,100,100,3,Wings:Expansion1,fraBlank,FFFFFF,FFFFFF,100,100,4,Tail:Standard,fraBlank,FFFFFF,FFFFFF,100,100,5,Aura:Standard,fraBlank,FFFFFF,FFFFFF,100,100,2,Companion:Standard,fraBlank,FFFFFF,FFFFFF,100,100,29,Background:New,space1,FFFFFF,848484,100,100,1,RightHand:Firearms,bfg,181818,313131,100,100,28,LeftHand:Firearms,fraBlank,181818,313131,100,100,26,#

It’s the chin, neck, and mouth that I’m finding to generally be unsatisfactory. The neck looks too exposed in general, like it’s an enormous weak spot in the armor. The chin and mouth look similarly exposed, and there don’t seem to be any mouth or beard graphics that lend themselves to impersonating a helmet’s ‘mouth’ audio emitter thingy. I matched the skin color of the body to the armor, and it works for camouflaging some gaps in the arms and stomach as looking like they’re part of the armor, but the illusion isn’t working for the chin, neck, and mouth. I don’t mind moving away from the helmet that’s currently equipped, though I would prefer to avoid the master chief and storm trooper helmets. Any tips for making the armor look more ‘sealed?’ Or about the portrait in general? Edit: the red I’m using is custom by the way, it’s 40 red, 1 green, 1 blue.