I want to commend you on both your attention to detail and your skill with respect to character model manipulation.
The relationship and bond that can be forged in Mass Effect 3 between Samantha Traynor and Commander Shepard is beautiful. You have captured the emotional commitment these two lovers share in this image.
The dress uniforms are very well crafted, in particular the White dress uniform that Shepard is wearing. This serves to distinguish Shepard further. I can appreciate how Shepard has picked up Traynor and even more so over the game thanks to the consistency with which you have presented Shepard as a toned physically fit woman which she should be serving as a career officer.
The setting is perfect for the image, however, I think that the Bokeh Depth of Field effect applied is perhaps a little too strong in the background. It makes the characters of Shepard and Traynor look like they are superimposed into the scene instead of being a part of it. This is the only real criticism I have. Perhaps ensuring that the feet of both characters are visible in the frame, or extending the DoF effect to the character's too (albeit to a less significant degree) would help integrate them better in the scene.
Overall the techniques employed are exemplary, with the minor adjustment mentioned I feel you could achieve a little more!
Overall The image is beautiful, and reminds me of a tender moment between two characters in a series I love to bits. You have captured the warmth very nicely but with a little tighter integration in the scene this could be even better!.
*flips table* how have I not seen this until today! Seriously though, this is absolutely perfect. As an ex military guy I have to say there is nothing more attractive then women in uniform (dress or regular work), and this picture just bludgeons any other opinion into a bloody pulp.