For a first delve into layout I think this is more than sufficient! Especially given how common it is to get completely illegible zines from inexperienced designers. And we're of the same mind — writing prompts are all well and good, but if I specifically want to play a journaling game, I feel like I want to have a bit more constraint and specificity behind me, rather than spinning off from one thing. Of course, it all has its place and reason to be, and personal preferences only go so far.
I look forward to more tarot games in the future :)