Welcome to the forum!
For future reference, and ease of critique, please post images vertically and number them.
1. (Girl on bench): Nice image but slightly over-exposed. The face has the appearance of over-processing, and the sky is a bit week. I think the use of a circular polarizer would have improved this image greatly. The pose is good, and the exrpression cut, but perhaps a little too centered (remember the 'rule' of thirds).
2. (Infant) Focus appears slightly soft in this one, and with a slightly cool caste (although that may be my monitor).
3. Good use of selective focus to isolate the main subject, but again, over-exposed, with blown highlights in the hair. While it's not necessary to have the subject stare right down the lens, it's a good idea to have them at least looking toward the camera. This might be all right as a B&W, but I'm not fond of the weak sepia treatment, and would prefer a slightly wider crop to include more of her left shoulder and top of her head.
Overall, nice work, with a few suggestins for future improvement; looking forward to seeing more.
Just my $00.02 worth - your milage may vary.
~John