A turned vessel offers a different set of proportions from an open bowl. Height, shoulder and opening combine to create a silhouette that can feel upright, rounded or gently tapering. The outer profile often carries much of the visual interest, especially when the interior is less visible.
Begin a design study with a flat outline. Mark the widest point and compare its position with the total height. Moving that point upwards can make the shoulder more prominent; moving it downwards gives the lower body greater emphasis. The opening then becomes another proportion to judge in relation to the body.
A vessel can be considered from several angles even when its form is broadly symmetrical. Grain and surface detail may create a preferred viewing side. For this reason, a silhouette sketch and a surface sketch answer different questions, and both can be useful in a project notebook.
The archive photograph illustrates the category without identifying a new maker or event. Look for the relationship between the opening and the fullest part of the body. Then draw a contrasting version, changing only one proportion. This makes the effect of a design choice easier to see.