I'm liking the suggestions!
Just to clarify, we are looking for building tips. We have another section about wearing tips that is already covered.
But anything you wish you had known before you finished your build.
Things like the helmet fan placement is very specific, but knowing for any first-time placements of anything to use a little hotglue and/or tape just to see if you like it or if it works before permanently securing it.
We don't! I nominate
RandomRanger to write a quick tut on how to put four lights and two fans into a helmet.