THIS IS NOT MINE. This is a study I did of a really old piece: https://e621.net/posts/8124 that I like, but is tiny resolution. I don't own the art or composition and if I could contact the artist to ask permissions to do fanart of their fanart I would, but the artist is unknown and the piece made near 20 years ago.
That being said: it's neat how they did the piece and there's so much detail in the anatomy with the sketchiest of strokes and I learned a lot in the process.