Then using the Magic Hands, Extra Hands device from Micro Mark (well worth the investment of less than $20 USD). Note that the line being used is lighter than the standing rigging. Standing rigging is tarred to protect the lines and so is either a Black or Dark Brown to simulate the tar.
The running rigging on the other hand isn’t tarred and therefore lighter, usually a Light Tan or even a Light Gray.
So the first photo shows the line running through the end of the strop.
Steve