You’re welcome.
Turning the green lines to Blue just allows for further editing.
Here’s a bit of a walkthrough I did for somebody a long time ago on here it has some good screenshots.
One of the screenshots does show the padlock tool.
And if you click my avatar there’s a link in there for some of the fusion 360 videos I made and there is one for an exit sign in there that deals with font as well.
Good luck ,make sure you post some of the stuff you’re cutting.