Query on my motion tracking

Alright so I have this scene where the camera swoops around my face and focuses on my face, where, with blender, I have placed a wart. I am using Icarus Motion Tracking and am wondering how I can get the wart to stay in its position. I know I can rodoscope it but I have another scene where a dagger is stuck in my back and I’m walking with it; how do I keep it steady with my motion and not just the camera’s?