I'm working on a personnal project called "Octa Solis" (just little stories taking place in a solarpunk city)!
It turned out pretty good i think but in my next concepts i'd like them to be a lot more solarpunk in the designs
Ultimately I'll try and animate it! π
I'm not sure if this will help, but I put together a list over on the writing wiki of elements that people in solarpunk spaces previously said they'd like to see in solarpunk art/writing.
The list is here. Your art is already conveying tons of cool solarpunk elements so this may be kinda redundant or not rigorous enough. Semi-related, I always want to emphasize salvage and reuse in solarpunk so I might point you to a list of ways parts from cars could be reused.