I'm pretty sure all they really looked for was "summer-themed" according to kakao. All the other "requirements" seem to have fallen by the wayside, so in light of that... Even though your screenshots were original and interesting looking, "summer-themed" isn't the first thing that pops in my mind. Would probably be a good collection for a pirate-themed screenshot contest. Summer themed is also kinda hard to pull off in this game because suimsuits, or undies are not visible by other players.