Work piece by piece. Apply glue to the part of the skin concerned and press the cut surface/obliquely cut side into the adhesive.

Attaching sequence: you attach piece 1 just under the chin, with the point forwards.

If necessary, piece 2 can be made smaller by pulling off a piece from the cut surface. Attach this piece to the chin, in the opposite direction to that of piece 1.
Attach pieces 3 and 4 close up on the left and right sides of piece 2, on the jaw line with the points forwards.
Pieces 5 and 6 should be affixed up close to pieces 3 and 4, with the points downward.

Please note: during attachment, keep the cut surfaces tightly together to ensure full whiskers (sideburns), also after modelling.