I really like your style and color palette! I think they are both nice. I personally prefer the composition of the Keep your distance one, but both are nice. Here are some minor suggestions. The illustration where the child blowing bubbles has some tangents:
where the knee touches the orange chalk child almost makes it like the chalk drawing is standing on the boy's knees.
The bottom bubble is lined up with the bottom of the door.
The hair is almost lined up with the bottom of the brick wall.
I love the chalk drawings, they are very fun!