This looks really cute. I want to point out a few things though, know that these are just my opinions as you asked!
Looks like you took the idea of having neon edges and used it extensively to define the whole character. My only complain is that neon edges made the whole experience a bit too repetitive.
I searched up Neon on art station and here’s one example of a character with some neon used on it, deliberately.
The head looks pretty boxy compared to the rest of the body which has some sort of detail to it.
It’s a robot so let’s have some wires hanging around, maybe some hydraulics (checkout @Sofloann 's work!), maybe some pipes running around. How about some LED lights maybe on the shoulders!! Or maybe your robot carries a computer or a gas cylinder behind with an antina?! Your imagination will take you a long way!!!