I don't care to much about Pinkie being shot. Whatever.
What really gets me is how you drew yourself holding that rifle! Are you holding it like an AT4?! The stock goes into your shoulder! You're not even looking down the sight! Don't say, "I already shot Pinkie Pie, I don't need to look down the sight." Because one eye is still closed and you haven't even lowered your rifle yet. Also, your weapon is still on safe.
Your drawing quality is great, just not the physics and logic behind it.