That has no effect on the shape of the WordArt. In Word 2007, try this:
Insert tab, Text group, WordArt button; click any of the WordArt samples with
a shape, such as WordArt style 22; type any text, click OK. With the WordArt
selected, from WordArt tools tab, Format tab, WordArt Styles, click Change
Shape. Those are the shapes I'm trying to recreate.