What cultural faux pas should I try to avoid making in Cambodia?

"It is important to be respectful of Cambodian culture and customs when visiting the country. It is considered rude to point with your finger, so it is best to gesture with your whole hand. It is also important to dress modestly, as showing too much skin is considered inappropriate. It is also important to be aware of the local customs and traditions, and to avoid touching people on the head or pointing your feet at them. Additionally, it is important to be respectful of religious sites and to avoid taking photos without permission. Finally, it is important to be aware of the local language and to avoid speaking loudly or using offensive language," mentioned another expat when asked about moving to Cambodia.