Start with your original design. I chose something simple for this.

Create an inner offset to create an outer frame.. I think a good size is .06.

Make your inner outline a fill. This will leave the material between your outer layer and inner layer raised to make a frame.

Create your text and make it a fill layer also.

Position your text in the center (or where you want it). It will turn white. This will be your raised lettering.

Check your settings and run your project!