2 vertical incisions from the horizontal incision, mesial and distal, to the middle of the crest, slightly palatal (or lingual)Horizontal incision at the mucogingival junction (on the vestibule)

2 vertical releasing incisions from the horizontal incision, mesial and distal, to the middle of the crest, slightly palatal (or lingual)

Dissect the flap, split thickness, all the way up to the top of the crest