Welcome!
Cute images, what are you using to process them? It looks like standard iphone processing, but I'm hoping this is done in Photoshop with some thought behind it.
1- image looks a bit slanted, might need some straightening. The clouds are cool and the added human element on the beach is nice. The image does seem overall dark though, which somewhat lends to the "storm is coming" feel of the image, but could still be brightened some imo.
2- I like this one, mainly for the expressions on the kid's face on the left.
3- This one is a bit no for me. The white vignette is not something I like, I find it tacky. The processing for the blur is a bit odd, seems unnatural. If it was naturally done in camera, then I dunno, still looks odd. The colour processing and what not is a bit murky with the colours and the light is a bit harsh, making the right side of the frame a bit too dark to have that "aww sweet" factor.
Overall, the lots of processing and the rounded edges scream out throwing processing on an image to make it more interesting. I don't think the images (at least the first and second) need too much processing to make them good. Keep it simple IMO