Just a few of my thoughts... I'm by no means an expert,
but I'd like to think I know what I'm doing at least 75-80% of the time!:
• I like the first one, I'd be interested to see what it would look like with a greater depth of field.
• Love the perspective on the brick wall, just feel it needs something to make it more interesting (I'm not sure what that would be though).
• 3rd one seems off...out of focus, like you didn't like how it came out
but tried to make it work in PS.
• The beach shot is super cute.
Overall, I think you've got a great eye for perspective!