The overall look of the suit is very good, but I have to agree with F4R and Mullreel too. There are also other features that you can incorporate in your suit to be more accurate:
How and where to add the holes in the jumpsuit and vest for the gauntlet hoses and the jetpack frame.
The two dental drills in the back of the helmet, the same drills are (were) on all the Sandy helmets (Pre-Pro #2, Sandy and ROTJ).
All the jetpack fittings and connectors were placed on the bottom of the jetpack, best seen on the Pre-Pro #1/Pre-Pro #3 jetpack, which is the repainted Supertrooper jetpack.
The left gauntlet has two hoses, one attached to the end of the flamethower and the other in the end of the gauntlet (the Pre-Pro #1 suit is the repainted and modified Supertrooper suit). The abdominal plate has the 3 holes in the left down side, while the left shoulder has two triangles, similar to the ones on the front of the helmet and possibly painted in the same color scheme.
I hope this info will help you to do an accurate Supertrooper suit.