Just wrapped up a Barbara build from Genshin and it ate most of my weekend, so while it's fresh I figured I'd jot down the stuff I wish someone had told me before I ruined my first couple of models. Biggest one: score every fold line before you cut anything out, even the tiny tabs. I used to skip that and wonder why my edges looked chewed. A dead pen or an empty embossing stylus works fine, no need to buy anything special. Second thing is glue, and this is where most builds go wrong. Less than you think. I put a thin layer on scrap paper and apply it with a toothpick to the tabs instead of dabbing the bottle straight on. Paper drinks glue and shows every wet spot, expecially on the light colored pieces. The small parts nearly broke me. Her pigtails and the little catalyst book at her hip are fiddly beyond belief. Tweezers, not fingers, and hold the piece togehter a few seconds longer than feels neccesary. Patience beats speed every time on pieces under an inch wide.
Last tip, do the head and hair first and let it fully dry before the body. Getting the face seam lined up is way easier when you're not juggling a floppy half assembled figure in the other hand.