Good build ! Here are my comments, even if I'm a bit late :
Maybe I'm a bit picky, but it seems that the edges of many of your armor pieces could be sanded, it's a bit uneven, like in your 5th picture. If you sand the edges it will not look like it was cut with an x-acto, it will look smoother. What I did was to sand with 120 (or 200 ?) to even the edge and after I used 400 (and sometimes more than that) to smooth the edge and give it a more rounded feeling. If you pass your finger on the edge and it's completely smooth, you're good :-)
I would fill the small holes (bubbles from the molding) on your blaster, it seems to have a lot of them.
Did you use E6000 to glue your thermal detonator ? If yes you could rub the excess of glue around the central white part.