Andrew Frost of Aloha Browser has put together a helpful article demonstrating a sophisticated workflow that includes Sketch and Magic Mirror, among other techniques.
“I hope this article will help you manage your localized screenshots and will make your workflow easier. The problem with localized screenshots is when you support a few languages in your app. Say 2 to 4 — that’s quite easy! But when you have 16 languages like Aloha Browser does..? Well lets see…”