Grommet placement on '92 Honda Accord

I have a '92 Honda Accord. I have replaced the grommet and spark plug seal. My question is: Where should the grommet be placed, on the valve cover or on the valve?

There are four grommets that go under then nuts that hold down the valve cover. Are these what you are referring to?

Thank you for showing me this drawing. Though this is very helpful, there is still and oil leak in the spark plug tube. I have already replaced the grommet, spark plug tube seal, and valve cover gasket, yet it still it is leaking. If anyone has experience this problem before, please respond to me on what you did to fix this problem.