English correction questions

Do is an auxiliary verb, and the base form of the verb should be added after it

And rubbish is a noun when talking about rubbish, so there should be no auxiliary verb do in front of it

not and it cannot be used as The beginning of the sentence, so the original sentence was changed to

No rubbish on the table! This sentence can be used as a slogan that no rubbish is allowed on the table!

You can also change it to Do not throw rubbish on the table, which is more euphemistic