Welcome! So, Flame doesn’t have a “trackable paint brush” like you are used to in Nuke in Silhouette. There are a lot of Silhouette and Mocha users here, and of course the Silhouette Paint plugin is available within Flame as an OFX plugin. You’ll see a lot of Flame users stabilize, paint, and then invert the stabilization whether that is a 1 point, 2 point, planar, motion vector, or camera track.
Here’s a thread that covers a few techniques.
Welcome!!!