I built this Sabine from Star Wars Rebels costume with my 12 year old daughter to wear. We're both pretty happy overall it being our first build together. Looking back I wish I had taken more photos of the build proces. We'll do a few more tweaks to it before the next con.
It's is scratch built. The top/ dome of the helmet is a base ball batting helmet cut down and every thing below is just manipulated plastic from a 5 gallon bucket.