Sounds like you’re treating each stroke like a reaction step, which is good if you keep a strict order. Check the symmetry first—any misaligned axis will propagate errors into the next layer. Make sure the central core is solid; if it’s weak, the outer layers will feel it. Watch for any stray lines that could act like impurities—remove or reposition them. Keep the spacing between elements consistent; that’s where most visual vibrations hide. Once you’ve tightened those spots, run a quick pass to see if the overall shape still feels cohesive; if not, a small tweak to the outermost layer often fixes the drift.

Just remember, symmetry is only half the battle—check the overlap too, make sure nothing overlaps where it shouldn’t, otherwise you’ll get a weak spot that will pull the whole sigil apart.