A grey waistcoat with a shirt and pale trousers creates a more divided middle than the turtleneck reference. The white shirt supplies large pale areas at the sides, with a darker tie between the waistcoat edges. Several buttons lead down towards the pale waistband. The picture stops before the full legs and shoes. It shows the waistcoat without a visible jacket above, without establishing which other pieces belong to an actual offer.
Use the crop to ask how much additional upper area you want. Try a comparable waistcoat with your shirt standing and seated. Check the trouser transition before settling on a tie or other neck arrangement. Add the planned jacket afterwards if it belongs to the outfit. The pale trousers are a separate colour comparison rather than a compulsory partner to the waistcoat idea. You might prefer the same structure with dark trousers. Complete leg length and shoes therefore need another view or fitting. This separates the visible layering idea from the unresolved whole-outfit decision.