It is not the prettiest but here is a little chart I made of skin tones.

I finally found a suitable reference for my small tutorial^^ ofc it has to be Mon Mothma!! This technique might not be original but that's how I like to do it and what helps me a lot while working with references. i tried to make it is quite beginner friendly

Though back to the topic! The most important aspect of analyzing a reference is simplifying!

step 1 -> carefully break the picture into straight lines and build your contour. try to notice connections between the size of the lines

my tip: pay close attention to angles!

now repeat with hands! notice how they do not cross the line of her shoulders

my tip: notice how fingers, knuckles and arms form a lot of straight lines!

check proportions by breaking empty spaces on simple shapes and comparing them to your sketch

let's break her face next!

my tip: put a piece of paper or a pen on top of a reference to better see the tilt

another check point

step 2 -> notice connections!

corseted for this so you bet I'm posting it everywhere, 1900s winter set