Nice colours. Not feeling the pose or the facial expression. Maybe try a little eye contact next time and get her to do something with her arms. Hanging them straight down is rarely a good idea. If it bends bend it, if it twists, twist it...
Were you using an ND filter here? Looking at it, I get a sense you had to do some processing to tone down her shadows. Still, I really like what you did with it, the color tone looks a little bluish but it works for me here.
Was she really into your photographing her, or a bit embarrassed by it? Overall, I like this look, I would have liked more down below in terms of composition and you have a gorgeous wife. If she liked doing this, we really need to see more.
Yeah, I saw that one. Definitely a creatively interesting pp job on that one. You've got yourself a lovely muse. Next time, go find a more private beach where she can be more comfortable and then get some really great shots that she can be happy with. Not that she may not like these, but just knowing she was uncomfortable in the moment with others watching you guys. I'd love to see what you can get with her if she's comfortable. You're definitely off to a good start.