Finished my Iron Man Mark IV a few weeks ago. It was a fun and hair pulling process, but the results came out better than expected. This was a foam costume. Also, the battery was dead in the right hand.
Great job. You have the proportions spot on there and the gaps have been filled nicely too.
If I was upgrading it in any way, it would adding some more detail around the hip/shoulder/collar joints with some 'greeblies' to give the impression that foam wasn't used
Thanks Dynofiend! Your build was one I had bookmarked while I made mine. Yours was very inspiring. The extra detail would definitely give it a more realistic look. I tried finding metal brackets, like you used, to add to my collar but I didn't have much luck.