The first one of the last set is too dark, and the second one of the last set is too bright, just under and over exposure. But don't get me wrong, sometimes those work, like underexposure if you're trying to go for a moody look, or overexposure if you're trying to go for a clean "heavenly" look (think models who are just doing skin commercials in black and white, thats the best way i can describe it) but for children i think you should be able to see all their details and see how cute they are!