This two page arrangement, with three variations, probably best fits the category of Skill Building.
There's also a four page version for those who prefer the page to be less full. It's just a preference, whether you prefer more or fewer page turns.
There's a tutor to help you get started if you need it.
As always, feel free to add your own ideas to what's here. There are lever presets indicated.
Huron Carol sheet music (two pages)
Huron Carol sheet music (on four pages)
Huron Carol tutor