To resize the Artistic Text left-click one of the blue selection handles and hold down the left mouse-button. Drag the selection handle in any direction, and a blue outline will be shown. To finish resizing the Artistic Text, release the left mouse-button.
You can also resize the Artistic Text by clicking it with the Selection Tool to select it, and then selecting or typing a new font size in the Font Size Drop-Down List.
and hold down the left mouse-button. Drag the selection handle in any direction, and a blue outline will be shown. To finish resizing the Artistic Text, release the left mouse-button. 
