a) My assumption is that Chris Foss or Dan O'Bannon could have sent a copy of Foss' drawing of the derelict ship detail to Giger during the preproduction time in 1977, along with what inspired its shapes.
b) Derelict ship illustration by Chris Foss ( Source: Charles Lippincott on Facebook)
f) A pipe or handle car becomes an arm with a hand
h.i) Area that becomes the leg
h.ii) Area that becomes the heel of the foot
i) Comparable area
j) Comparable area
k) Comparable area