If you’ve played with the new Stampin’ Blends then you probably already know this. Do not go all the way to the line. An alcohol-based marker tends to bleed a bit so leave a tiny bit of white space before the line. You can always go back and fill it in but you can’t do much if it floats past that border. And if you’re stamping with the blends please use a memento ink pad.
Here’s the finished example while leaving a little wiggle room.
With inky fingers,