Hi-
The schema and the canvas (views) are separate. What does this mean? It means that you can design your schema, and your schema has a field called my:textbox.
Then you design your view (or views) and you can include the same schema node as desired. For instance, you can drag the schema node into each view. Or you can display the schema node as a textbox in one view and as a Calculated Value in another view.
So just keep that in mind. Hope this helps!