Your models and textures are superb :) Big big big thumbs up on those. But I would really love to see you clean up your sketches sometime and either try strong inks or color, or do something really heavy with graphite with a lot of contrast (natural contrast, not tweaked in photoshop). Basically, less sketch and more
drawing ;) Another suggestion is to make some sort of line to imply a surface below the character, some sort of ground. A floating body can work only in special circumstances, and I find that mainly those with a ton of experience and pro skill manage to pull it off. Though when they have that, they tend to avoid floating characters entirely ;D It\'s okay, I\'m guilty of suspending my chars in space too. But a hint of shadow below a body can do tons to an image. Your armor itself is astounding, but some of it gets lost in the sketchy quality of the images - this is why cleaning up may be so important, as armor tends to have a lot of detail that will really shine through if strong strokes are brought forth instead of scribble-lines (though those can be a ton of fun to experiment with).
I wonder how you start drawing - do you go immediately to contour lines, or do you try to make some sort of base first, working with geometric shapes and trying to get the feel for the bulk of the persona you\'re creating? I greatly encourage the latter. And as always, study of anatomy helps both beginners and pros alike, and people like us who kind of get stuck in the middle ;)
And of course, my favorite image:

<3