First time submission; Lack of aesthetic issue

[#1]

Hi! I would love some feedback on why this might have been rejected due to lack of aesthetic? I'm new... just trying to get a feel of how things work around here

[#2]

Hi! I would love some feedback on why this might have been rejected due to lack of aesthetic? I'm new... just trying to get a feel of how things work around here

[#3]

I dunno. It's very beige. It's kinda icky with all the bubbles, but also hard to tell what it is if you've never been to the beach and seen the water do that. Maybe it's not quite abstract enough to be abstract, but it's too abstract to be useful otherwise?

I don't know, aesthetics are such a subjective thing.