Nano Banana Pro Conversational Editing: Background, Passersby, Outfit Swaps

No masks, no selection tools — just describe in plain language what to change. This prompt is built around the key declaration 'change only this one thing, keep everything else the same,' and the same sentence pattern covers changing backgrounds, removing passersby, or swapping outfits. If a result isn't quite right, just add another line to the same conversation instead of regenerating from scratch — much faster than starting over.