For 3 days in, these aren't to bad. But since you asked, here are some thoughts...
The lighting is uneven on the kids face. Although not a great amount in these, it can cause problems in the future. There are several things you can learn to do to fix this. 1. Place the kid in an area where the "shade" is consistent. 2. Use a reflector to fill in the dark areas and even out the lighting level. 3. Let the fill flash work and fill in the shadows, even up the lighting that way.
The background can get kind of distracting also. The other poster talks about adjusting you f-stop. Shooting at 35mm, you are going to get a lot of stuff in focus. A lot of portraits are taken with the background out of focus, only the subject in focus. So how to do that? Use a longer focal length, keep the subject a fair distance from the background, and use a large aperture.
These are all things you can begin learning about. Enjoy the new camera and keep shooting.