Sketchbook challenge day 3

It was easy to pick up the sketchbook today.
I'm happy with what I got on the page at the end. But now as I stare at it and analyze it a little, I don't see what I wanted to get with those 3 helmets. They are just plain weird.

Materials used: 4b pencil (eraser)

I've tried to cheat a little today and use both sides of the page. Unfortunately the paper is too thin so I can't do that without ruining something. I have plenty of paper left. :)

Here are my previous challenges:
Day 1
Day 2

Have fun, pursue your dreams and keep steemin!
@zneeke