So cute, wonderful photos. I find the background a little busy and would have liked to have seen that blurred a little (I'm sure there's a proper word for a blurrier DoF LOL).
I like the concept: your child (he is cute, even with his back to the camera) and the inclusion of your gigantic (?) trainers to add some sense of proportion.
You could play with the colours to make your son stand out a bit more, perhaps turn the background B/W (technical term is something like selective toning, I think)
The rain is making him shrink. nice images.
Most parents save money for college. You need to save for shoes when he grows up.