My project in Illustrated Posters course

Hello everybody and specially Xavi.
Here's my attempt.

I can't bet objective! There's too much information. Yet, something is missing.
I'm about to crop kind of 5cm from left, right, up & down and have some lines limitating it (like Xavi did in the course).

But hey. I'm lost. Any critic (positive/negative) will be welcome.

The sea as two shades of blue (pretty close but I've tried to nuance a little those water splashes :-))

Thanks for any feedback