Mixing Anim Blueprint (head) with an Anim Sequence in the Sequencer

Hello, I would like to make a sequencer animation using

  • a character animation motion capture (a run for example) anim layer
  • plus a modification for the head movement via an anim blueprint for the head look at something.

For now I can’t get an anim blueprint working on to of an anim sequence layer.
Do someone can point me to a starting point ?