@Chaley: When accessing Widgets from a long press in the home screen you will see the menu if available widgets, as Purple Lady has displayed.
When accessing the Widgets tab from the Apps Drawer you are displayed an example if each Widget.
Nova Launcher does not display Widget images when accessing Widgets for placement through the Long Press, rather, simply a list of available widgets by app, and dimensions.
Both locations display the Widget size as 1 x 1, as that is the size dimension of the default Widget when placing any of the 3 on screen.