Excellent! The only thing I would say is that most of them are a little too long for the "bumper sticker/sound bite" crowd (i.e. pretty much everyone these days).
If you can make some of them shorter, they would post well on Facebook, etc. ETA: I can't do much photoshop right now, but a (de)motivational poster-generating website should work.
I'll try to think of a few phrases to add and update periodically, but here's a start.
"If only the Jews had guns..."
"If only the Syrian rebels were better armed..." "If only the Iranian students had guns..." "If only the Somalis/Chinese at Tianamen/Rwandans/Cambodians/etc..."
"When seconds count, the police are only minutes away" (Image: Korean storeowners/LA riots, woman being attacked, etc)
"When the Second Amendment was written, citizens had the same weapons the Army did.""The Second Amendment is not about duck hunting." (Image: Mexicans protecting their town against the cartel, Americans protecting against looters, etc)
"The AR-15 is the most popular hunting rifle of the last [10?] years." (Image: prairie dog hunters, any hunter posing w/ an R-25 and a trophy, etc)
"The First Amendment applies to radio, television, the internet, and social media. The Second Amendment applies to Modern Sporting Rifles." (This one might need a little work...)
"Why do you want to confiscate my property and limit my rights, but won't allow me to defend myself?!" (Image: woman w/ AR)
"We had guns in school before we had shootings." (Image: High school rifle team from the 50s/70s/etc. Subtitle: The problem isn't the guns!)
"More school shootings occurred during the AWB than before or after." (Image: FBI UCR chart?)
"Legislation based on lies?" (Image: screenshot of the reporting that Lanza in fact did NOT use the AR-15 that was in the car. Alternately, screenshot that all these shooters had psych problems)
"Gun control doesn't work in Mexico" (Image: cartel violence. Subcaption: Citizens are disarmed, but the cartels are not."
"If guns cause crime, why doesn't Switzerland have crime?" (Image: citizens w/ full auto rifles)
"I'm defenseless. Please don't hurt me."
"Let me show you how this works. Get rid of your guns..." (Image: thug, government abuse, etc)
"It's not about guns, it's about control." (Image: mass graves or any of the other images you have...or the Jews headed to the trains, or a political prisoner, etc)
"The Second Amendment is designed to prevent this." (Image: mass graves or any of the other images you have)
"Ban military firearms??" (Image: musket, 1903 Springfield, M1 Garand, 1911, .38 revolver, Winchester model 70, Krag-Jorgensen, etc)
"I don't know what it is, but I'll put you in prison if you have one!" (Image: Carolyn McCarthy trying to explain the "shoulder thing that goes up")
"Would it have been better if they were killed with these?" (Image: pump-action shotgun, 1911, revolvers, etc)
"What would you want to protect your family?" (Image: a guy w/ a revolver facing three badguys...a guy w/ an AR facing three badguys)
"The Second Amendment is the last defense against tyranny." (Image: Ice-T...use whatever his quote was...secondary images: Rosewood, Japanese interment, captured Indians, etc)
Hope that helps.