Once again, Jews did not translate the KJV.
http://www.blueletterbible.org/cgi-bin/words.pl?book=Gen&chapter=1&verse=26&strongs=06213&page=
Gen 1:26 ¶ And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
Let us make [06213] `asah
1) to do, fashion, accomplish, make
a) (Qal)
1) to do, work, make, produce
a) to do
b) to work
c) to deal (with)
d) to act, act with effect, effect
2) to make
a) to make
b) to produce
c) to prepare
d) to make (an offering)
e) to attend to, put in order
f) to observe, celebrate
g) to acquire (property)
h) to appoint, ordain, institute
i) to bring about
j) to use
k) to spend, pass
b) (Niphal)
1) to be done
2) to be made
3) to be produced
4) to be offered
5) to be observed
6) to be used
c) (Pual) to be made
2) (Piel) to press, squeeze
Your pearls are made of plastic.
'Let us' is referring to the person of the verb (1st common Plural).