In this step you will need to cut out the hole for your plant. if you want you can just use another container with a lot of holes in it but i strongly dont recoment this. ( I am only doing this for domonstrational porposes)
Place your plant on the top of the lid of the container, begin to go around it with the marker.
After you are done witht applying the marker begin to slowly cut the lid.
Then sillicone your container to the lid.
make sure that your container or plant is elevated about 1/4 in above the bottom