Sorry if someone's already asked this of you before, but have you ever played a game called Warframe? I've noticed there's a few of your helmet designs that're scarily similar to one of the helmets in the game. https://i.imgur.com/KWWoG1f.png Not that I'm saying you're stealing, in fact I'm almost afraid that the player who designed this may have stole from (or was massively inspired by) you, haha!
Edit: Wow I'm blind. I didn't look at your favorites until now, that might explain a few things.
Yeah, I get that comparison a lot. I've never played it. I like the art when I do come across it, but most of my inspiration for my stuff comes from other sources. Probably the same stuff that inspired the artists on Warframe.