Hi beer-quote,
This is not a site issue theme; hence, I placed your question under the Help section for this tutorial. (This is not a complaint at all from my side; all good, I say that just in case.)
A missing "Node"
Images for the forum can't be taller than 500 pixels.
Please share where Elly talks about it, minute and second-wise.
Have you downloaded the content from the YouTube video link?
https://www.youtube.com/watch?v=3BS-LKXnFEo
I assume you use the current version.
I hope that I can get what you need if I know what it is.
All the best