1. Taking up too much space: Be mindful of the limited space on an airplane. Avoid spreading your belongings across multiple seats or encroaching on your neighbor's space.
2. Talking loudly or incessantly: Respect the quiet environment on the plane. Keep your conversations at a considerate volume and avoid talking for extended periods, especially during overnight flights.
3. Reclining without courtesy: Before reclining your seat, check if the person behind you has enough space. Slowly recline your seat and avoid sudden movements that may disturb the passenger behind you.
4. Ignoring personal hygiene: Maintain good hygiene during the flight. Avoid strong perfumes, excessive body odor, and take regular trips to the lavatory to freshen up.
5. Being impolite to the cabin crew: Treat the cabin crew with respect and kindness. They are there to ensure your safety and comfort throughout the flight.
6. Using electronic devices inappropriately: Follow the airline's guidelines on the use of electronic devices. Switch them to airplane mode during the flight and refrain from making phone calls or playing loud videos without using headphones.
7. Overindulging in alcohol: Limit your alcohol consumption on the plane. Excessive drinking can lead to disruptive behavior and discomfort for fellow passengers.
8. Being inconsiderate with overhead bin space: Use only the necessary amount of overhead bin space for your belongings. Be mindful of other passengers who also need to store their bags.
9. Not following boarding and deplaning instructions: Pay attention to the boarding and deplaning instructions given by the cabin crew. Follow the designated order and be patient during the process.
10. Forgetting to use headphones: When watching movies or listening to music, use headphones to avoid disturbing those around you. Keep the volume at a level that only you can hear.

Remember, practicing good airplane etiquette ensures a pleasant and comfortable journey for everyone on board.