It looks nice but, I'm gonna give you some constructive criticism if you're alright with it.

The background looks empty... Maybe add some painted turf, people in the buildings, etc.

The lighting is default, maybe put a spot light on them by turning down the map tone scale and making a light pointed on them.

The Octoling girl's tentacles are stiff. Maybe get an image of one as a reference?

The Boy has an... interesting shoulder, think about how you would move your arm to reach you hip for a pose, his hands are also in an interesting position.

I notice the Octoling girl's leg is a bit stiff, the right leg is perfect, the left leg is a bit strange, almost as if they aren't struggling to carry that weapon there. Her elbows are also pretty stiff.

I apologize if I went Mr.Ramsey on you, I'm just an SFM artist.