Oh wow, thank you! I did use a whole bunch of references, different images of the Mona Lisa for the general color palette and lighting (also for putting down some of the prominent facial features, like the smile and the fold of skin beneath his eyes for instance), several screencaps of Amon and some celebrity photos to help me imagine what he may have looked like, some other screencaps for the Republic city background, and a few cosplay photos for the fabric textures. For his face I generally just tried to make him look a little less Italian and a little more on the Asian side, though whether or not I accomplished that could be debatable I guess depending on who you're asking (I just stopped tweaking at the point when I was satisfied with it)As for finding good refs, I would strongly recommend looking into magazine editorials, as they are often dramatically lit and really well set up (try looking into fashion blogs or fashion related tags). The downside though, is that tend to feature similar looking models and/or celebrities, not to mention the extensive photoshopping to make everything look unrealistically perfect. Which is why it would also be good to have some regular (I mean, not the magazine ready ones, could be something as simple as a red carpet/candid snapshot of a celebrity you like, or I dunno, the first picture that comes up on google) photos of people/characters to pick out features from. So then you'd have on one side refs for appearance and features etc., and on the other side refs for lighting. It would require some imagination to bring it all together, and the challenge would be to put your own spin into it. It would also likely involve some trial and error, but that's the fun part, and you'll always end up learning a lot from it.Anyway, many thanks again for the thoughtful comment, I really really appreciate it.