What are the rituals performed when worshipping ancestors. Specifically?

The first thing to do is to take three sticks of incense from the table, light them, remember to light all three, then blow out the flame on the head of the incense and put them in the incense burner

Then kneel down on both knees. Then take the paper money prepared on the table. Burn it. Then take the wine and tea on the table and sprinkle a little on the ground.

All of the above is done in one go after kneeling on both knees.

Then kowtow three times and get up. Make a bow and you're done

Then you bow three times and get up.