Add a handful of real samples
Paste three to ten posts that sound like you on a good day. Pick a range: a story, an opinion, a how-to. The variety gives the style more to learn from than ten posts on one topic.
Preview before you switch it on
Build a candidate style and read a preview draft. If it leans too formal or overuses a habit of yours, adjust the samples and try again before you activate it.
Keep every version
Your style history is saved. Restore an earlier version if a new one drifts, without losing what you trained before.