A couple suggestions:
1. The flack vest is an off-white, cream color not gray (LadySewforus could make a great one for you).
2. The ammo belt has a few buttons on the pouches for ESB.
3. The neckpiece armor is the wrong shape, it shouldn't bow up like that.
4. I would also add the reddish/brown rope girth belt to your bust display.
5. It looks like the helmet could use some black/brown/gray misting.
Tell you what though, your display with all those busts looks awesome!
You also might want to add some white stitching to your ammo belt, it's a little more visible on the ROTJ version but it's definitely white in ESB. Other than that it is a sweet display.
I think it would look really cool if you added the jet pack to the display (but that's me.) I'd also divide the ammo pouches like they're shown in the picture above.
Agreed its a very impressive display so far, a few points to look at would be misting/black washing the helmet as the main green is a little too light, also the rangefinder ear pieces are more of a creamy beige colour, rather than gold, I used tamiya desert yellow with a few drops of flat white for mine, other than that it looks killer!!!