How would I make nifty textfield using larger font

Hi I have a text field on my screen but its tiny:

<panel height="13%" width="100%" childLayout="vertical">
    <text id="label1" height="50%" font="Interface/Fonts/MinionPro.fnt" color="#f00f"
          text="Hello World!" align="center" valign="center" />
</panel>
<panel height="10%" width="100%" backgroundColor="#55a5" childLayout="center">
    <control name="textfield" text="Some text"/>
</panel>

the problem is I can not figure out how to change the font size on it. Please help me out here.

When you create a font(.fnt) it is only for one size only.

You need to create another font with a bigger size.