Youre use of line really gives this character a strong feeling of solidity. The strong V shapes really compliment each other. You have the v at the waste and stacked on top of that is an hourglass shape with the shirt bottom and the breastplate. These lines really give the heart of sense of placement and provide unity throughout the entire character.
The right arm, eyepatch and solid hair poms maker her feel like she's part android, I'm not sure if you were going for that, but it is an interesting way of looking at your figure.
I don't know why you choose to make it about sailor moon, it feels like it definitely stands on its own without the need for you to attach it to someone else's idea.
The colors are sharp and it has a lot of character, and the details hold the eyes really well.
great job with this.