By positioning your camera slightly above eye level, you eliminate an unwanted double chin and create a more flattering angle. You can even use books or boxes to stack your device, since no one will see them.
For that matter, remove any unnecessary clutter and place it out of sight behind your computer. While some setups work better in 2D than in real life, view your space on your computer screen to ensure the perfect look.
Design the perfect space for video conferencing - the right environment brings out your best!