Necronomicon; Researching my Stories - Night-Gaunts

Out of what crypt they crawl, I cannot tell,

But every night I see the rubbery things,

Black, horned, and slender, with membranous wings,

They come in legions on the north wind's swell,

With obscene clutch that titillates and stings, 

Snatching me off on monstrous voyagings

To grey worlds hidden deep in nightmare's well.

Over the jagged peaks of Thok they sweep,

Heedless of all the cries I try to make,

And down the nether pits to that foul lake,

Where the puffed shoggoths splash in doubtful sleep.

But ho! If only they would make some sound,

Or wear a face where faces should be found!

As this literary piece is a poem rather than a story, it is really open for interpretation and should not be taken literally as it is written. The poem would have you believe this is a manifestation of something that is actually happening, however once you analyse it for what it is, it becomes more apparent that Lovecraft is speaking of the phenomenon of recurring nightmares - no matter what night it is or how he tries to fight it, they always happen.

Considering this poem gives a fairly detailed description, it would be difficult to create the image of a night gaunt whilst making it much different from the official illustrations of the necronomicon, so rather than taking all of the description literally, I have decided to explore different ways I can represent them:
Black - rather than being coloured black, I could turn this into a reference to black magic.
Wear a face where faces should be found - relocate the face maybe?
Membranous wings - don't have to reference to bat wings or similar, think about placements and practicality.