Woocommerce Custom Text next to Attribute Label

I am using Woocommerce for the store/shop page, which only allows so much customization. I have spent hours trying to figure out how I can add some simple text and cannot figure out the coding needed. So, under my product page (I only have one product in the shop right now), I have some product attributes called “Size/Length” and “Clearance Depth”. I need to add text or additional description under these attribute labels. For instance, I want the following:

Clearance Depth
*This is the distance from the back of the cornice to the wall. If you have curtains or blinds, we suggest the 6″ depth.

The page I need help with: [log in to see the link]