Six Questions About Proper Flag Etiquette for Displaying the American Flag Answered

When I display the American flag should the union (the blue field with the stars) be on the top or the bottom?
The American flag should always be displayed with the union at the top. Hanging an American flag upside down (with the blue field of stars at the bottom) is a way of saying "I'm in distress, send help."

When is it acceptable to fly an American flag at half staff?
Flying an American flag at half staff on a fixed staff is used to indicate mourning. On Memorial day the flag is often flown at half staff until noon, then at full staff from noon until sunset. The half staff is used to honor those who died for our country, while the full staff is a symbol of the living country. When flying a flag at half staff, the flag should first be hoisted to the peak, then lowered to half staff. When lowering the flag from half staff, the flag should be hoisted to the peak again, then lowered.

On what days should I display my personal flag outside my house?
The American flag should be displayed on all national and state holidays and on any other days proclaimed by the President.

Where should the American flag be displayed in a church or auditorium?
This depends on whether the flag is hung flat or on a fixed staff. If the flag is to be hung flat against a wall, it is to be hung behind and above the speaker (always with the blue field with stars on top and to the flag's own right, regardless of whether it is hung vertically or horizontally.) If the flag is to be displayed on a fixed staff next to the speaker on the platform it should be on the speaker's right. If the flag is to be displayed on a staff elsewhere than on the platform it should be displayed to the right of the audience or church congregation.

How should the American flag be displayed in relation to other US organizational and state flags?
When displaying the American flag with other US organizational and state flags the national flag must always take preeminence. When flying state or other pennants on the same staff as the national flag, the national flag is always on top. When crossing staffs with another organizational or state flag the national flag should be on its own right (the observer's left), with the staff in front of the other flag's staff. You should never cross the staffs of two American flags. When grouping several staffs of organizational and state flags with a national flag, the national flag should always be placed in the center and flying above the other flags.

How should the American flag be displayed in relation to flags of other nations?
When displaying the American flag with other nations' flags there should be an equality in height and display. That is, each nation's flag should be of roughly the same size, displayed on separate staffs, and flown at the same height.

Blessings!

Source
The Book of Knowledge. The Children's Encyclopedia. Volume 19