The details and finish are coming along - the main issue is the proportions. "Heroic" scaling can explain away the head size (he's only about 5.5 heads tall) and it doesn't look bad compared with his torso. His shoulders - where the actual joint would be - do appear to be pushed out and down a little to much, though. The saluting arm is looking good, but his other is a little "bendy" - it appears as a mostly uniform curve, instead of a series of effectively straight segments with curved shapes on top.
His biggest issues, however, are below the waist (haven't we all heard that, before!

). Aside from the lower elements being generally too short (anatomical rule of thirds - height of each section should be
roughly equal: top of head to waist, waist to top of knees, top of knees to soles of feet - i.e. the legs, counting from the hips/crotch down, should be half the figure's height), the proportions of individual elements to each other are off (groin/hips, thighs, and shins are all roughly equal length). To help illustrate:
Anatomy is probably the more difficult aspect to grasp, for starting sculptors, than the technical skills. For future projects, I'd recommend starting with a good armature (properly proportioned, even if that means building it out of stiff, soldered sections instead of freehanding bends from one or two pieces of wire) to help keep everything in line. If you print it properly scaled,
this image (too big to post, in-thread, as I don't know how to resize) can help you lay out the parts for an anatomically correct armature.