Artist's commentary
Sin: https://imgur.com/a/TekJAGY
For Sin make sure you get the pink glowing ring in her left eye, as well as having her scales have some minor level of thickness to them. Also her horn shape points downwards.
Eye: https://i.imgur.com/UbEMgn5.png
Horn: https://imgur.com/a/JNCLJFT
Decima: https://imgur.com/a/IQDSoGt
Personality: Cold/serious/bitch
Please draw these two girls as sexy heroes. You can design their outfits, just have them be risque. We want you to make them look pretty and lewd.
They could be standing together in a confident heroic pose wearing their revealing super-hero outfits.