You have to hand it to the designer for Forgotten's cover here: they took a girl's image, changed her shirt's style, doubled and reversed her for a ghostly glow, and then gave them both a hair tint. And that was just for starters.
I like the similarites between the landscapes: we've got two different cloudy skies and two different empty fields. Character-wise, I'm not sure if I like the double figure or solitary girl better—I think they each work for their cover. I will admit though, I am totally loving Forgotten's font.