Metaphor exercise

The difference between a similie and a metaphor is very subtle; while both draw comparisons to the subject that the sentence is describing, a similie uses like or as while a metaphor does not. Some examples of similies and metaphor describing my hair, this school, anger, love, forgiveness, the sun, a flower, school lunches, and Mr. Dahl:
my hair: My hair is as long as a river. My hair is a river
This school: Pacific American School is as small as an ant compared to big schools.
Pacific American School is jail.

Anger: Anger is like a bomb that explodes unexpectedly.
Anger is tsunami, destorying everything in its path relentlessly.
Love: Love is like fire that passionately arises between lovers.
Love is a rose, while it may seem pretty and enjoyable on the surface, it pricks people who attempt to touch it.

Forgiveness: Forgiveness is like a rock turning into sediments, as serene as it seems.
Forgiveness is a melted ice cube, everything is forgotten and forgone.
Sun : The sun is as shiny as a diamond.
The sun is lion, the keystone species that supports all the planets.

Flower: Flowers are like girls, weak but strong and steadfast in fighting the weather.
Flowers are birds, free as they fly and stand in the face of mother nature.

School lunches: School lunches are as nasty and smelly as the sewer.
School lunches are textbooks, boring and banal.

Mr. Dahl: Mr. Dahl is as tall as a tree.
               Mr. Dahl is a tree.