Describing the national flag

One day I was talking to a Filipina friend and asked about the flag of my country and meanings. So I'm going to describe it.

The flag has 3 colors, green that stands for hope, white for purity, and red for union.
White is the purtity of the catholic faith, the red is the blood of the national heroes.

The coat is an image that represents what the Aztecs saw to settle in the land. The legend said that
the gods had advised the Aztecs that the place where they should establish their city was to be identified when they saw an eagle, perched on a prickly pear tree, devouring a serpent. They saw this mythical eagle on a marshy lake that is now the zócalo or main plaza in Mexico City.

I've read something about the meaning of the coat and well the eagle is the mexican town who can defeat the danger (the snake) and can stand any difficult situation (the prickly pear tree). Below the tree there are 2 branches, Laurel and Oak leaves encircling the Coat of Arms represent victory and the martyrdom of those who have given their lives for Mexico.

We have always to keep in mind that the eagle is each of us so we can defeat anything.