First correct it. This is moxibustion, not baking. Secondly, if you buy moxa sticks (moxa sticks) outside, put one end on the fire to blow out the open flame, and use the lit end to warm moxibustion at the acupoint or the part that needs moxibustion. The lighted end of the wormwood stick needs to have a certain distance from the skin, and the distance depends on the feeling of the moxibustion giver, that is, it can feel warm, but it will not burn. However, the time of moxibustion needs to vary from person to person, depending on the condition. If it's just health care, it takes about five minutes for each acupoint. If it is to treat diseases, it is best to consult a professional doctor.

I hope it helps you!