A one-sleeved evening shape pairs a bare shoulder with a long sleeve on the other side. Its pale reflective surface travels across the torso towards folds at the side waist. Below, angled skirt sections meet a high leg opening. The longer lower area continues farther down at the side. The photograph crops part of the head and concentrates on lines between shoulder, middle and hem rather than explaining every aspect of the product.
Compare this as another distribution of exposed space instead of a second waist opening. The visible focus is asymmetric shoulder line and diagonal slit. If the first cut-out reference interests you, this alternative supports a concrete question: do you want to expose the side middle or work with one bare shoulder at the upper finish?
Try the actual chosen version with lowered arms and ordinary reaching. Inspect the waist folds afterwards before rearranging them. Walk and sit with your shoes to judge the leg opening independently of the shoulder idea. A similar reflective surface does not make the arrangements identical. Select upper line and lower opening as separate qualities of the complete outfit.