I don't know who would be interested, but: Based on all the drawings I've made of these characters, particularly the ones that look the most 'right' to me, I've come up with the following 'rules' for their anatomy (although, to allow for my awkward hand, they aren't hard and fast rules).

* Humans, I usually draw about five or six heads high; Esprit are more like seven or eight. They come out all wiry and skinny-looking, which is what I was going for. A six-foot-tall human would just barely come up to an adult Esprit's shoulder.

* Each segment of an Esprit's body is about the same size: Arm length = leg length = torso length x2. Where humans' elbows come down to the ribcage and their wrists to about crotch level, Esprit's elbows come down to the waist and their wrists to knee-height.

-- Hands and feet are meant to be outsize -- I rough them in with circles all about the same size as the head.

* Length of ear is greater than diameter of head, but not by TOO much.

* Wingspan of arms is about equal to wingspan of actual wings at full extension.

* I have to remind myself to DRAW THE F__KING ANTENNAE -- I keep forgetting for some stupid reason. The nodes at the ends are spherical for female Esprit and conical for males.