This is my next project, I like the fact that it's big and that it has a reasonable amount of detail to it. I think, as best as I can tell, I think that I'll need to modify the helmut a little bit.
You might want to ask around if any of the other members who went to Euro Militaire have pictures of the Astronaut that was on display there - dunno who did it, but that was a stunner, could be very helpful to inspire you for your project. I wish your astronaut will be as good as that one !