So we know she is going to aim her weapon and there is an explosion that was caused by someone trying to hit applejack.What stance/position would best convey the message that Applejack is taking aim and dodging enemy fire that is visually appealing?For instance, why not have her dive to the side, almost upside down while looking through the scope? A slight change in angle and posing would bring out the intensity of the scene. loose, agile, slyly dodging fire with a devil may care grin on her face as she takes aim mid air.Take this model for exampleYou can see she's kind of doing the same thing, in the middle of a fight, getting out of the way of enemy fire and taking aim mid air, or at least the dramatization of that. See how interesting and eye catching those kind of positions are? These are called Dynamic Poses (or action poses depending on who you ask) . In animation they would typically be used in Key Frames, because they usually mark the moment before the change to a new position. Your character would be in what is called a Transnational pose, one of the moments between one dynamic pose and another. However its the dynamic pose that is the most eye catching. Comic books use them quite frequently, as well as storyboards and finished pieces.and with explosions, you want to ramp up the intensity as far as you can, and then ramp it up even more. Look at how shadows and light play on objects when intense bright lights hit them, the shadows during blasts like that are almost pitch black and where the light hits its almost pure whitehope that helps