One criticism, if I may. Subjects are too frame central. I would have liked to have seen more looking room. Rule of Thirds. Position the subjects more to the left.
Inspector Gadget. I expected something coming out from his hands or body or something, love the womans outfit and her little gun, not sure about the background or sky though, seems out of place from me for some reason. I love the concept of the rocks and that background and what they are standing on, it fits perfectly.
Kudos for costuming and location. Here are the things that don't work for me:
lighting: harsh and flat, with weird vignetting at the bottom.
composition: centered
models: unengaged. Like they were told to "look over there" but there's no emotion.
What is he holding?
Why isn't she brandishing that incredible weapon, or at least holding it so we can see it better?
Great potential, though. Just needs a bit of finessing.