How do I use LIGHTBURN?

Thank you everyone as always.
Can you tell me how to use Lightburn?
I want to leave the (CAUTION) in the photo unburned by the laser,
and fill in the C14.
Sorry if this is a basic question.
I was able to do it a while ago, but time has passed and I’ve forgotten how.

Put the text on C14 and select both to fill


KENThank you for your reply.
However, it looks like the image.
It doesn’t show a preview without the laser burning inside the text.
Why is that?

KEN
Thank you as always.
It was a misunderstanding on my part!
I was able to create it successfully!
Thank you!