(the title of this post hearkens back to a small book / card which Warren Chappell created, “Let’s make a “B” for Bennet” — I was fortunate to meet Mr. Chappell when he was Artist-in-Residence at UVA on a school field trip when I was young, and he was the author, along with his cousin Oscar Ogg, of a number of books I remember from my youth.)
Note that the below is obsoleted in current versions of Carbide Create by the ability to asymmetrically scale a circle into an oval/ellipse.
Okay, step-by-step, hopefully correct this time.
Start by launching Carbide Create — set the width of the drawing area to 20", the height to 15", OK
After re-setting the view, your screen should look like this:
just with 10 times as many grid lines or so.