Start around the corner to the left - up onto a ledge then using a hold on the arete step around somewhat gingerly onto the sloping footholds, to be presented with the crux. A technical and balancy sequence leads to better holds. Now follow the arete as closely as possible to the tricky finish over the final obstacle. Classic and airy.
The left edge of the wall.
Toprope - blocks on the top are more than adequate to set up an anchor.
Sandrine Chiron right before the crux.