I'll admit I'm not particularly fond of the underexposed backlit look; at least not all the time, but many of these are very nicely done. Obviously this look is popular these days and what a lot of people want. I think many effects work better done sparingly.
Something seems a little off (at least partly how they're showing up on here, something like the girl's dress that's leopard print - up close they look like squares but clicked and enlarged they look like spots as they should). But to me though the color looks a bit overdone in some, such as in the skin tones; the sky is white but in a few they look almost made up. On your site some look somewhat soft, so maybe it depends on where they're posted they might look different in quality.
Some of the grayscale too look somewhat off, almost harsh but yet not black and white, to me they seem noticeably processed which I think can overpower the image itself.
I'd think about vantage point and framing; the posed shots are done nicely and you're getting some wonderful facial expressions, in others there is plenty of space above heads but fingertips or feet cropped off. In some of the shots like kids playing there are distractions that if framed differently or from a slightly different vantage point might have been out of the frame and could have made for cleaner compositions. You seem to do well interacting with your subjects, they look like they're having fun.