HR Giger's Necronom V (1976) references Mark Rothko's Gethsemane (1944)

leading from
HR Giger's Necronom V (1976)
and
Gethsemane by Mark Rothko (1944)

a) HR Giger's Necronom V (1976)

 Giger's Necronom V (150x100 cm) (1976) (acrylic on paper)

 b) Mark Rothko's Gethsemane (1944)

Gesthemane (1944) by Mark Rothko

c) The feature that resembles a bird of prey with a good becomes the head, and his beak becomes the horn or beard like protrusion. Perhaps the back of the neck of the form that looks like a bar with a bent top becomes a tendril coming from the back of the head

d) Vertical ribbing in the fabric becomes the ribcage.

e) Piercing 
 

f) Droopy forms with dark shadow becomes the hands, handles and shadow.