Manners for "HANAMI" in Japan

I think not all of you know how to hanami in Japan
So, here's some tips (from japan-magazine)

Sakura Flower Viewing

Japan is famous for its flower, Sakura.
The cherry blossom (sakura) is Japan's unofficial national flower.
There are many different sakura tree varieties in Japan,
most of which bloom for just a couple days in spring.

Many tourists or even locals celebrate hanami
What is HANAMI? Hanami is a cherry blossom viewing parties under the trees.
It's usually celebrated in March until early May.

like this :D

Anyway, sakura season is getting closer (p^ ^q)
So I want to share some places in Tokyo that worth-visiting while sakura season for hanami.
(by the way I got the informations from japan_guide, thanks ^ ^)