It's happen to me, don't trust the filter you applied to your App, the image reference I used for this drawing is AI, and I found out when I already finish this drawing. I just felt betrayed and conflicted.
I got the image reference from pintrest, with AI filter on, that should be no AI image on my board, and the naive me that just want to practice portrait drawing are fooled by the no AI modified tag.
Drew using phenomenician's Tiger24 color palette
I was planing to use all of the color palette from the palette competition, but now I'm not so sure....
this really give me a mild depression 
WIP record (timelaps)
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Sucks for the ai incident but eh, given how rampant it is nowadays it's bound to happen to some of us eventually
stumbled upon so many ai generated animal documentaries when looking for ref for my last piece. It's so infuriating
You did great on the piece nonetheless