The order matters because each line narrows the next. You cannot combine two sentences until you have written them separately, and you cannot polish delivery on a pitch you have not yet said out loud. Skip the mirror step and the first three become a script you recite rather than a sentence you say.
Step 1: Say what you do, plainly
Everything later leans on this line, so it has to survive being repeated by someone else without you there to explain it. Start by writing the longest, most jargon-soaked version you can, then cut it down until a stranger outside your industry could repeat it back. A real example: 'I optimize cross-functional B2B workflows' becomes 'I help warehouses stop losing packages.' Read your sentence to one person who knows nothing about your field and watch their face — if they ask about the work instead of the words, it is clear. What people skip here is writing the job title or the industry name, which tells a listener your category but not what changes because you showed up.
Step 2: Write your outside passion in one line
Why at this point: step 1 gave you the professional half, so this half needs the same plainness before any urge to combine them shows up. Pick the one thing you would talk about unpaid for twenty minutes — restoring a 1970s motorcycle, coaching fifth-grade soccer — and write it in the same shape as step 1: verb, object, effect. Example: 'I rebuild old motorcycles and teach friends to ride them.' Resist picking the passion that sounds most impressive; pick the one you would keep doing if nobody ever heard about it. A hobby list gives a listener nothing to ask about: 'I love hiking, travel, and photography' is three labels rather than one action, and labels end conversations instead of starting them.
Step 3: Combine both lines into one pitch
Joining the halves is mechanical now, because step 1 and step 2 already produced two sentences that each survived a real listener. The 'by day... but...' shape works because it sets up contrast in one breath, so nobody has to wait to hear why the second half matters. Write it once, say it out loud, and time it — fifteen seconds is the ceiling, not the goal. Concrete version: 'By day I help warehouses stop losing packages, but my real passion is rebuilding old motorcycles and teaching friends to ride them.' Where people stumble is softening the pivot into 'and I also enjoy,' which flattens the contrast that made the two halves worth pairing, or letting the first half run so long that the passion arrives after the listener has stopped listening.
Step 4: Rehearse out loud, not in your head
Mirror work comes last because rehearsal only fixes delivery, and delivery cannot rescue a pitch whose wording is still being decided while you speak it. Say the whole thing out loud, record it once on your phone, then listen for the two robot tells: pitch that flattens at the end of each sentence, and identical rhythm on every clause. Fix that on paper — underline one word per sentence to stress, and mark a slash where you would naturally breathe. Then practice while doing something with your hands, like washing dishes, so the words arrive without the page in front of you. What quietly sabotages this step is rehearsing silently in your head, which feels fluent because your inner voice supplies the timing that your mouth has never once tested.
A reminder on your phone gets dismissed and leaves nothing behind, while a paper strip taped to the bathroom mirror visibly gets shorter each time you cut a line off, and it stays there until the fourth line is gone. Print the four lines and cut one off after each rehearsal that holds up when spoken to an actual person.