?(BASIC)? How To Create Side Profile

I cannot for the life of me figure out this super basic task of making this side profile in the earbuds tutorial by Shapr- he leaves out how he create the sketches and I don’t understand how to create the sketch he’s using to create the sweep with.
Very basic I know but this is a learning curve, would Love the help getting me off the ground- thanks.
Earbuds Tutorial: 3D modeling earbuds | Shapr3D step-by-step - YouTube (Start at 8:15)
Loom what I’m trying: Loom | Free Screen & Video Recording Software | Loom

The instructor mentioned at 0:29 to “download the model for free”. If you look in notes on that page, the link to the model is there. I checked it. Just scroll down and you’ll see it.

Tony