Place your camp inconspicuously. A meadow with one obvious tent in the middle always seems more crowded than one with 5 tents hidden in the surrounding trees. Bury human waste at least 150 feet from streams. Carry out all your garbage. Respect other users.
Many people go to the backcountry for the feeling of remoteness and solitude.
Don't intrude on that experience with excessive noise. Please keep dogs under control. Soap, even biodegradable soap, is a stress on the environment. Do as much of your cleanup as possible with soapless hot water. When using soap to wash yourself or your dishes, do so at least 150 feet from any water source and pour it into absorbent ground.