You’re asking for a 3D file in two programs which are (mostly) 2.5D.
For modeling this in the nascent Pro mode of Carbide Create which adds 3D modeling — go to
https://launch.carbide3d.com — creating an account will allow a free 14 day (with one grace day, total ~=15) trial. “This trial is fully functional for 14 days so you can generate G-Code and try a full project.”
See: Carbide Create Pro - First Look for some more details. A video tutorial at: https://community.carbide3d.com/t/starting-with-2-5-d-carving/15168https://www.youtube.com/watch?v=ict5lZ9PlyU
Worked up a very basic tutorial (may not show best practices) at