Overfeeding is the mistake I see most in beginner autoflower journals, usually because people copy a photoperiod feed chart at full strength. Plants from autoflower seeds are smaller and hit flower faster, so they generally want about half the dose and rarely need anything during the first two weeks in decent soil. The feeding schedule laid out on https://turboautoflowerseeds.com starts light and ramps up slowly, which lines up with what has worked in my tent. Clawed and burnt tips are usually a nutrient issue, not a light one.
