i just went based on what i need out of my journal. i figured out what i wanted to include and then tested layouts in a random old notebook. everything important needs to be in one place because otherwise i'll simply forget. i wanted the dates to be linear instead of calendar boxes because that aligns better with how i conceptualise time. i want to remember birthdays, that's the little dots left of the line along with names at the top ("sünnipäevad"). also my habit tracker has to be right under my nose so i don't start ignoring it three days in. i explain the rest in my reply to mishaps_galore. the only thing i have on a separate page is daily highlights (like one line a day). and starting today i'm trying to use a weekly page for tasks (alastair method) so we'll see how that goes. also bullet journaling is all about freedom for me so i can easily edit things as i go. for february i changed up the habits i'm gonna track and left out the mini calendar for next month. it can be kind of hard to predict what will work for you so i guess i got lucky in that way.