How to use a grey card for achieving accurate white balance in photography?

To use a grey card for accurate white balance in Photography, follow these steps:

1. Place the grey card in the same lighting conditions as your subject.
2. Set your camera to manual mode and take a photo of the grey card.
3. Use the photo of the grey card to set the white balance in your editing software.
4. Apply the same white balance settings to your other photos taken in the same lighting conditions for accurate colors.