Justin & Davy have ya set straight away
I’ve always done like Justin with one-coats and have a jot out that gets a “mud cap” that’s scribe cut onto the imperfect drywall edge.
Lately, I have abandoned one-coats and prefer a scratch and brown, saves the assembly thickness. This usually makes for a finish where the tile edge terminates as if it was set straight onto solid backing. Check your wall for plumb and see where it falls so you can have an idea ahead of time. Before getting proficient with Scratch and Browns, I would do one-coats by recessing my solid backing flush to the studs and floating business as usual when thickness mattered. Pics attached, one coat let’s ya tile same day
Good luck Jon! If you’re on YouTube check out Calidad he’s a muddawg with some video skills