I managed to get hold of a 1/35 Russian helmet from one of the guys in my club. I added a liner and some straps and now it's fixed on the base. The MP40 now has a sling, I increased the contrast on his face a little and the nameplate is in the post. Everything is starting to come together, although I've had to resort to finishing it off in acrylics to get it finished in time for Euro.
Some pics (taken on iPad):
Some pics (taken on iPad):