I think your kit is already coming together nicely
While working on the kneeammobelt, you should also have a look at the inside riveting, as the rivet should be at the top of the upper corner, just as you have it on the outside.
To me it also seems like your biceps armor is still a little too large but if it fits you well, that's okay.
One thing that stuck out to me is the vocoder part of your helmet, it should be painted in a way that you can still identify the separate lines, I hope you get what I mean. Have a look at starwarshelmets.com to see pics of the screen-used sandtrooper lids.
Keep up the good work!