Well, the first thing I'm going to tell you Snakeyes is the first thing I tell everyone on Mercs when I have to make a heavy improvement post. My first job above everything else when it comes to Mandalorians is to help you make the best armor possible for yourself.
Lets start with the lack of an armor vest. Some people will say you don't need one, and if your doing a Crusader or Neo Crusader then you don't...but your doing a modern era mando and you really do need one. The vest helps add some bulk to the armor, not only that but it also helps add some comfort when your moving so you don't get pinched.
Your chest armor is way to big for your body. It should never overlap on you the way it looks in those pictures. Use the following "finger" measurements to help you place your armor:
- Index finger (like your pointing at someone) space between collar and chest plates
- Index finger (like your pointing at someone) space between your chest diamond and chest armor
- 1 - 2 Thumb spaces(Do a "thumbs up" then rotate your hand towards yourself so the thumb points to you) between the top of your gut plate and chest armor
Your entire chest armor looks like it could use a trim, as well as your collar plate. You don't want the top outside corner of your chest armor to stick out beyond your collar plate, but you also don't want your plates to look like they are being pushed outward (likes yours look which are tale-tale symptoms of being to big).
You also need to install a full sized t-visor into your helmet, it'll look better and give you more viewing area.
Your gauntlets really need some sort of lower clam shell enclosure, be it plastic/metal/leather. The tops are fine, but the bottom need something to make them look a little more mando-like.
Armor below your waist, you at least need some knee armor if your going to use a loin cloth. Instead of using that loin cloth, I would suggest using a 3 section Kama (It goes around you like a ARC kama, but has a 3rd piece running down the front like a loin cloth. This will close your armor up a bit and give it a little more menacing look.
If you can do all of that, then you are well on your way to having an outstanding kit of armor.