I think your colors are trending more towards Gravelord and your shapes towards Championship/Challenger at the moment, both of which can be really cool themes for Aurelion Sol :)
I'm not a concept armor but I'd recommend maybe trying some more rounded armor and ornamental/ceremonial decorations if you want to hit that Bloodmoon feeling. We don't have any of the concepts up online but Pan has some process pics for the Diana splash that may help with shape language: https://www.artstation.com/artwork/4zV24
Thanks for sharing! This is awesome and I hope you'll post more if you continue to work on it :)
Needs more red