I like the posing. The lighting needs a bit of work but overall is not bad. What really stood out is they lack 'pop'.
As you have not got image editing turned on or if you have I cannot see it
I'll make a suggestion.
For the first image open in Photoshop.
Duplicate the background layer (copy1).
Duplicate the background layer again (copy2).
Set blending mode for copy1 to overlay.
Set blending mode to copy2 to screen.
Adjust opacity for copy1 and copy2.
Try opacity copy1 (overlay) at 10%
Try opacity copy2 at (screen) at 96%
Then adjust opacity of these two layers to your taste.
You can then flatten layers and adjust levels if you want a last tweak.
Takes about a minute and can be used on most images to give them a lift if the lighting looks a little flat.
John