Sorry but I saw lots of demons like that one in my life :/ , but I like the wings, it's simple made and the light nicely shine through. I might be wrong but you put yelow at the top of gray what gave you dark yelow. I think you should have been use ereser first then put yellow to make the light a little lighter on his body.
Thanks for the tip ^^
I think instead of erasing I will try to leave those areas white in the first place, because erasing color is usually not as clean as i want it to be.
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