I love Amsterdam.
It is my most favorite city in the world~!
They're clouds, they aren't always the same everywhere. Sometimes they look weird. I also doubt this person would copy/paste the clouds in, since it's an environment and not a drawn picture, he/she doesn't get credit the same way they would get if it was a drawing.
Quite a long text, I apologize. Also, I don't mean to insult you or be mean to you, just expressing my opinion.