Most of the artworks here are indeed commissions (there's also some of my horrendous artworks (spoiler : see what are the artworks that seem to have been drawn by someone with even less skills than a paraplegic and without the excuse of the disease).
I know that Ramna-chan tend to do that with basically every artist on eka's (blind posting of everything in the gallery), but frankly, you could at least warn or ask for the autorisation...