The light in Texas is surely nicer than what we have here in the Pacific Northwest at this time of the year. I think these have a good feeling to the environment, the background: light, bright backgrounds with nice sunlight and good bokeh generally, which makes them feel welcoming, happy, free, unrestrained, easy-going. My choice would be to see just a bit more depth of field though, on the faces; there are parts of the subjects that are out of the focus plane, like the faces and noses, and the forehead hair on the boy, and that adds a type of "photographic look" that runs a bit counter to the backgrounds and the free and easy posing. In a word, that type of shallow depth of field, that which renders only the eyes in crisp focus, looks contrived, like camera-work artifice.
The eyes on the mother and father have good sparkle to them, but big sister's eyes in shot #3 are dark and sparkle-less. Some fill light on her would have really made that shot come alive. Dad's face and neck and chin show up as OOF in many places.
The shot of the boy alone is pretty good, but could use a tiny bit of very minor retouching on the skin.The exact, precise placement of the boy in relation to the sun is almost perfect! Well done on that, well done indeed! The eyes look very enhanced; some people like that look these days, but again, I just love the way you used the natural light on that shot.
The shot of the two kids together has the same relatively flat backlighting as #3. and that lack of fill makes the eyes not show up much, which is a huge contrast to the solo shot of the boy, where the eyes are a huge component part of the shot.
