Hi Christina - I was too busy over the past few days to post my thoughts. You've gotten some great feedback.
First image - too much foreground and background and not enough middle ground. I think both work as compositional elements, but need to be reduced to bring more balance to the shot. I think the idea of the square format works as it achieves this balancing. The second thing that struck me is the lack of "pop" in the colours. I've also used a light vignette to draw the viewe's eye in. This might be a bit heavy-handed for some, but...
Second shot:
Some similar thoughts as on the first image, except that the bench overpowers the rest of the image and it pops out a bit too much. So I brightened the background, toned down the bright bench and lightend the boardwalk. I also found that the image went on a bit too far to the right, so a small crop there. I used a vignette, just like in the first image to bring the viewer's eyes into the image.