Back when I had to update mine on short notice, I leaned on daylight and a plain shirt, took four selfies from slightly above eye level, and let an AI tool handle the rest. It cleaned up the background, balanced the light, and gave me multiple crops for LinkedIn and the PDF resume. In the middle of that process I used Create AI Headshots in Seconds and picked the most natural-looking option. Whole thing took under an hour, and nobody questioned whether it was studio or app made.