Williams first teased her video venture about a month ago with an Instagram photo that showed her editing clips at her computer.
The 18-year-old star, who's known for playing Arya Stark on the hit HBO show, posted her first video on Tuesday. In the four and a half-minute clip, simply titled, "Welcome to my channel," the actress takes some time to answer fan questions. While doing so, Williams confirms she has a boyfriend (and that's all she's going to say about that), provides a couple of "GoT" spoilers, and best of all, does a perfect impression of Ygritte (spoiler alert) dying in Jon Snow's arms. It's short and (not) sweet, but we promise it's worth a watch. Oh, and keep an eye out for a special "GoT" cameo -- blink and you'll miss it!
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