To curve your text, simply type in the word or phrase you need to curve and choose what level of curvature you want, from -10 to +10 then click on add text.
A positive curvature (+1 to +10) curves the text upwards to varying scales:
A negative curvature (-1 to -10) curves the text upwards to varying scales
You can always edit the curvature anytime by clicking on the text box and the pencil icon.
TIP: Matching the curvature to the topper border
If you're trying to match the curvature to the topper border, try resizing the text also to get different degrees of curvature. A future release will allow for even more incremental options.
NOTE:
The scale of curvature selected is only displayed after clicking the 'add text' button. Any other edits can be previewed in the top preview window.