Step 1: Pick the process that costs you the most time. Not the most complex process. The one you spend the most hours on that someone else could handle with the right instructions. For most founders, this is the sales follow-up process, the client onboarding process, or the weekly reporting process.
Step 2: Write the steps as you do them. Open a document and do the process in real time. Every click. Every decision. Every email. Write it down as you go. Don't clean it up yet. Just capture the raw sequence. You'll be surprised how many small steps you do automatically that you've never told anyone about.
Step 3: Add the "what good looks like" checkpoint at each step. After "Send the welcome email," add: "Good: personalized with client name, project name, and kickoff date. Sent within 2 hours of contract signing. Bad: generic template with no personalization." The checkpoints are what make the SOP enforceable. Without them, "send the welcome email" could mean anything.
Step 4: Remove everything that isn't an action. Context, background, and "why we do it this way" don't belong in the SOP. They belong in a separate document if they're needed at all. The SOP is for doing, not understanding. Keep it to actions and checkpoints.
Step 5: Test it with someone who's never done the process. Hand it to a team member. Ask them to follow it exactly. Watch. Don't help. Note where they hesitate, ask questions, or do something differently than you would. Those gaps are the SOP's failures, not theirs. Fix the document based on what you observe.