Quoted from spandol:
What happened to make you have to do touch ups? I'm about to do my stencils and wondered if it's something I can help beforehand. Did some paint creep over and it can be sometimes unavoidable?
My guess is that the paint cured too much before I pulled the decals.
All of the edges seemed to not be straight (even though I made sure to ensure the decal was firmly secured before painting). I only waited 10 mins.
When pulling the decals off, the edges wanted to pull the paint. And with the next (gold) decals, they pulled all the edges off, so it wasn't straight.
The gold decals pulled very nice, as I did it as soon as all of the paint was applied. These edges were nice and straight. But I fear that if I had to put another decal on top of that, it'd pull the edges again.