Answer:
a drawing made while only looking at the subject
Incomplete question
need more information
too broad
need more context
They are important because without them there is basically no drawing every drawing includes lines
Hello there i hope you are having a good day :) Your question : what is Lucifer kids name? it starts with an Satan but then again there are other sons like envy,
gluttony,
greed,avarice,
lust pride,
sloth,
wrath.
Hopefully that helps you ❤