Awesome job on this one. It really captures a moment. even if it is a bit softer than my typical tastes, I still like it.
As for the colors, the red background is a bit dull, but doent hurt the picture, as well as the gun, it could use a second light source from below just to highlight all the detail in its compnents. As for the only error I can see, is in her tear, the shadow side of it make it look a bit thick, almost making it look like a scar, but I know its a tear and that obvious, so it no huge deal. But all that is very minor and perhaps leaning more toward my own tastes, so its not a big deal, overall you did a great job.