Heya,
Looks ok to me.
Things to consider maybe for next time:
Horizons - When things in the environment are sloping, it's distracting. Now, if it truly was sloping that's different, but a pond certainly doesn't do that.
F2 would have been plenty of depth of field on APS-C at this focal length for mom & baby. Open her up, get a little more pleasing blur to isolate your subjects.
Good job getting low. Get lower! The shots where you are probably on your elbows are a good perspective. Shooting from above down into someone is not so much, at least to me (the ground becomes your background, and it's too close, plus, this is the view that everyone in the world see's; it's more interesting to see perspectives that are not the every day). My general rule of thumb is always "get to the ground." If you can make the ground a horizon so that it's not behind your subject(s) it will isolate more via depth of field and has a more pleasing look.
Time of day & light is crucial. Here, you're in the shade, good on you for that, but your environment is not--looks like bright sun. I would avoid bright sun in general, you get that double light look where it's dark here, but blown out there. Go for early morning or late evening so that the light is more even and you don't get hot spots. I know that's hard sometimes with kids--my 2 year old doesn't like to get up early, but, I can generally get her out later in the day, so I go for evening more often. All kids are different. Also, more overcast or dim light days, less squinting which is a good thing. Full sun days, I just avoid straight up. Of all the issues with the above images, this is the one I would actually stress the most--light, you have blown out bright areas in your environment, even though you were trying to get the subjects in the shade, it sticks out really big time.
Keep it up!
Very best,