The report says Haiti attacked early and often, with two forwards high up the pitch and midfield support arriving quickly.
That matters because Scotland are usually at their best when matches are controlled. An opponent who breaks structure and plays with freedom can drag even organised teams into uncomfortable moments.
Open football cuts both ways. If Haiti push numbers on, space should appear.
That is why a player like Lawrence Shankland could be useful if Clarke wants more presence around the box. Link play, late arrivals and sharper movement in crowded areas could all matter against a defence that reportedly looked vulnerable despite the convincing scoreline.
The biggest trap is not tactical. It is mental. Haiti appear to bring physicality, pace and belief, and teams with that profile can punish any slack start. Scotland should back themselves to create chances, but they will need concentration without the ball and better game management than the scoreline alone might tempt them into expecting.
The storyline now is simple: can Scotland impose their structure, or will Haiti force the opener into the kind of fast, chaotic match they seem to enjoy? That answer will shape the tone of the whole group.