Legal Question in Intellectual Property in California

Unless your writing partner is also an attorney, I would suggest that using a non-attorney to draft a nondisclosure agreement for two partners, one using an assumed name, is too risky from the twin standpoints of (a) being ineffectual to prevent disclosure and (b) presenting an inaccurate legal description or picture of the writing venture, to be worth attempting. On the other hand, I doubt that it puts you "at risk legally" except that it may fail to provide the partnership with the desired protection against unwanted disclosures.