So far I’ve discussed the Celestial Forms of grossly inhuman choirs of angels. The Lilim are quite different. They are described as looking like their corporeal vessels, only with green skin and tiny horns. This will work for most characters, but it’s worth noting that such a description will be inherently inadequate for Lilim with two (or more) grossly dimorphic vessels – or one which has lost its original vessel for one reason or another.
While the similarity between vessel and Celestial form is a good default, I would not force a player to stick with it. However, if there are gross differences between the two, that is certainly grounds to ask for a bit of background (or possibly even a work of short fiction)
Rather than give specific suggestions by Superior, I figured I’d offer up another resource that would probably be even more useful in describing a Lilim’s celestial form.
The Lilim Palate
There are many colors that can be considered “green.” Picking out the right set for your character can add a lot of individuality. Different colors can be picked for skin, eyes, and hair – but also for blush, lips, freckles, scars, nails/talons, or anything else that might have distinctive shading.
Lilim man not naturally have the grand rams horns that are popular among certain other devils, but even tiny horns allow for some variety. What are their shape? How many are there? Where are they placed? Are they symmetrical?
For all we know, there is a whole herd of Lilim unicorns who delight in tracking down virgins and granting their wishes… for a price.