You should give credit to the artist and put the source in your posts, otherwise It misleads to believe it's your artwork, which could make your post get flagged for plagiarism
Here the source of that artwork
https://js4853.deviantart.com/art/O-Kakos-Daimon-370090935
Absolutely agree with @melooo182. We have recently removed people from our community group due to plagiarism as artists work very hard to create their artworks and this should be respected.
Thank you! I didn't find the source! Now I updated the post!
🙂