My first essence!  Using Eruheran's helpful SEM explanation and my own conglomeration of format, I've made a substantial essence map for the MC of Alaidia (Peter's Angel) - Peter himself.  I think it went well... once you start listing metaphors, it's hard to stop.  

One thing I couldn't figure out, however, was how to divide MIND from SPIRIT and how to subdivide the categories beneath those headers.  So right now I just have a list of attributes and related metaphors which, while not proper, is sufficiently helpful, I think.
Advice and opinions greatly desired!
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PETER
{APPEARANCE}
-HAIR
--Color
---Light Blond
*strands of white moonlight
*refined white-gold
*finely-spun flax
--Texture
---Slick, Fine, Straight
*thin silk yarn
*polished metal threads
*wind in a field of prairie-grass
-EYES
--Color
---Light Blue
*a sliver of summer sky
*blue diamonds
*robin’s egg shell
--Depth
---Clear, Sharp
*a slice of mirror reflecting the sky
*shards of broken glass
*purified ice
-BODY
--Build
---Slender
*a sturdy pole
*a crouching leopard
--Height
---Tall
*a guard tower
*a fruit tree
--Posture
---Straight
*fence rails
*solider at attention
{SPIRIT}
---Powerful
*a drawn bow
*a snake posed to strike
*a professional pianist at a grand piano
---Authoritative
*a king’s scepter
*a disinterested judge
*a military commander
---Passionate
*an abolitionist
*a trespassing and disregarding protestor
*an outspoken patriot 
---Faithful
*a dogged suitor pursuing an uninterested lady
*a martyr 
---Prideful
*a tall stone tower
*an unfurled flag in the wind
*ceremonious trumpets
*a call to war
{MIND}
---Bitter, Vengeful 
*a searching hawk
*a weakened bridge groaning under weight
---Affectionate
*a doting suitor
*a father coaxing his child to walk
---Shamed, Guilty
*the prodigal son
*a smear of ink on a long scroll of text
*a person’s trailing shadow
*Dickens’ Ghost of Christmas Past and Ghost of Christmas Yet to Come
*an accidental murderer pursued by the avenger of blood
*a false witness waiting for the judge’s verdict
---Charming
*a flattering salesman
*a suave gentleman at the center of a party