Identify the parties involved in the transaction. 2. Drafting a purchase agreement for buying or selling a business in Texas is a critical step to ensure a smooth transaction.In this training, I'll discuss how to fill out a wholesaling contract in real estate. How do I create a Business Purchase Agreement? Be reasonable, draft a winwin agreement, and include the most critical clauses protecting both parties' interests. Discover the essential components of a purchase agreement contract and use our template to draft your next legally binding document.