You're Number One
Generally, laypeople who have no experience in drafting legally binding contracts are not capable of drafting a valid separation agreement without the help of lawyers.
If you were served a petition for divorce there are strict deadlines within which you need to provide a response. Failing to provide a response on time can lead to negative consequences for you as the respondent including costs or possibly adverse findings against you that effect your rights and liabilities in a divorce proceeding. If you were served you should contact a lawyer right away.