n Parades - The flag should be in front of the marchers. At the moment the flag passes in a parade or procession, all persons should show respect by standing at attention facing the flag with their right hand over their hearts. Persons in uniform should face the flag and render their formal salute. During a parade it is appropriate to salute only the first United States Flag. When other flags are included, the United States Flag should be centered in front of the others or carried to their right.
In a parade, passing review, color guard or other setting, it is never appropriate to dip the American flag. Dipping the flag is a sign of disrespect.

n Clothing - The U.S. Code, Title 4, Chapter 1, Sec. 8(d) states, "The flag should never be used as wearing apparel, bedding or drapery."

n Homes - In flying a flag at a private residence, house or apartment ... it should be flown at night only if illuminated and in inclement weather only if made of all-weather material (contact a local flag dealer for sales information). The flag should be clean and without tears, rips or shredding.

Source: National Flag Foundation