Something I have started using instead of AWB (auto white balance) is the Kelvin Method. I won’t do a massive tutorial on it, to get to kelvin you choose white balance – K then adjust the temperature in camera. It helps you have control of your White Balance without the camera deciding for you. You can use a gray card or AWB it is totally up to you but I thought I would show a before and after of the Kelvin Method:
AWB Kelvin 6300
Both images are SOOC (straight out of the camera)!