There is NO way to do this in the default, free Apple iOS Notes app.
Apple's default iOS Notes app is limited in its functionalities.
The Apple iOS Notes app is NOT strictly a drawing app.
There are many things the basic Apple iOS Notes app does NOT do.
Apple's iOS Notes app is more of a “showcase” app that demonstrates/inspires what the potential is for a notes-style app can be and more.
IMHO, the default, free Apple iOS Notes app is just a basic, barebones notes app with a limited set of features.
The fact that Apple ONLY updates this app once a year, with the introduction of a new iOS/iPadOS, instead of on an ongoing, regular basis, is an indicator of how Apple treats this app.
There are much better and stable, pay third party notes apps with better feature sets that get regular weekly/monthly app updates from their developers, that will do what you need to do with imported images.
Sorry & Best of Luck to You!