I need to change the size of my annotation label symbol in ArcMap. Upon creating the annotation feature class from my line feature class, I realized that the line feature class' Reference Scale for its labels determines the scale setting (including size) for the label text and symbol. In this case, I am only looking to display the symbol by itself, without any text. For ex., the U.S. Interstate highway shield. So, if the scale was set at 1:80,000 when I clicked "Convert Labels to Annotation", the annotation feature class created the annotation features at that scale, and so far I've been unable to manipulate the symbol size of these features. It looks like through right-clicking Properties on the annotation feature class I'm able to change the size of the text, but not the symbol itself.