Different style of HP book covers

[Annemehr]

> Carol adds:
> What's with the raised hands for HBP? I understand all the
> others.
> 
> Carol, who prefers more realistic, less stylized art
>

I believe they're the hands of inferi, coming up through the water, 
represented by the green waves at the top.  Those same green waves may 
also stand for potions in general, and the green goo in particular, all 
at the same time.

Annemehr,
who likes at least some art of all kinds, but finds very few abstract 
pieces to relate to