Very clean! I'm starting the exact same helmet too. I have all of the major pieces done, but I just need to work on the little things. Seeing your photo on how that part sticks out from the rest of the helmet (photo #2) is a huge help. I'm a little bummed that now I'm probably going to have to take that part apart, but I'm glad I saw it now while I'm still in that area.
Good idea on the paper clips too! Pretty crafty! ahha