Are you practising right now? Because if you have scripts that your fiance is turning into storyboards/layouts, one way you could practice is by attempting to do layouts on those pages yourself, without looking at what your fiance is doing, and then going to compare yours to theirs after you're done.
This wouldn't be to remove pressure on your fiance, it would be to learn. You can look at the choices you made, and the choices your fiance made, and if they have time, your fiance can explain the choices they made to you -- "see how my version of the page is more intimidating because I chose this low shot?" It might help you start to learn more about how to approach laying out a page!
And while the recommendation to watch movies, pause them, and sketch out what you see is a really good one and a great way to learn composition (and can also help with learning poses btw!!), ultimately I gotta agree with @Kaykedrawsthings, the comic page is also going to require thinking about the composition of the page as a whole and how the panels flow into each other and stuff, not just the composition of each single shot.
If this is what you need, there are a lot of resources for drawing people and environments! You don't need to learn special Layout/Storyboard anatomy to learn basic anatomy; anything book or tutorial that will teach you basic drawing skills is useful in that regard :>