World of Warcraft Account! PvP, PvE, Transmog and Art! Horde AND Alliance! 
NSFW Acc: @NicaraoNSFW . Avatar by @Feldrassil
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Just had a look at your gallery in ArtStation. I don't think that you can get into problems for that :) I don't know if I would even consider it NSFW :D Even if they were naked, or showing sexual actions, it is unlikely you get into trouble for it (for the art itself). (cont.)
... however, if you start printing your art on t-shirts and sell it with a Warcraft logo on it, there is were you may run into legal problems (selling "IP-Related Products"). By making fanart itself, posting it on the web, even you get paid for it by commissioners, is no problem.
