The main issue with the top image is that it's soft. It appears that you focused on the cuff of her left sleeve. When focusing a single subject, I usually suggest using a single focusing point and placing that over/between the eyes to ensure they are in sharp focus. Good job on shooting vertical, but I would suggest leveling, and in future, avoid cropping the hands.
The second image suffers badly from motion blur. As there's no EXIF data appended to the image, I don't know what SS you chose, but always go for a minimum of 1/100 when shooting people, and never less that 1/FL when using glass longer than 100mm. Also watch the fly-away hair. Both the adult and child's faces have a lot of hair blowing across them. Consider a crop to move them slightly off-centre.
Just my $00.02 worth - your mileage may vary.
~John