Create split-screen layout

I need a split-screen showing the creator reaction on the left and the product walkthrough on the right. Arrange the creator clip to occupy the left two-thirds, the walkthrough on the right third, align both clips’ midlines so eyes sit at the same horizontal level, add a 0.8-second wipe between them at the start, and ensure both sides have matched color grade and audio levels. Export for TikTok with no letterboxing.

Before I send this split-screen to the brand, make it easier to compare: nudge the creator frame 8 pixels left so their headroom matches the walkthrough, desaturate the background on the walkthrough to reduce distraction, add a thin divider with 30% opacity, and label the right panel with a 1.2-second lower-third ‘How-to’. Flag any sync drift between the two clips.

I built the split-screen but at seven seconds the walkthrough clip drifts by one frame against the creator’s reaction. The producer will call it sloppy and the creator expects a launch tomorrow. I’m not sure whether to speed-ramp the clip to fix timing, slip the clip frame-by-frame, or re-cut and re-export. What’s the fastest reliable fix that preserves lip-sync and avoids artifacts?

Over the last month I keep getting split-screen projects back because of tiny sync and framing issues, costing two-hour reworks. My editing team sees me as the blocker. Which routine change — from timecode habits to naming conventions to a preflight checklist — will stop these late fixes without increasing review time?