Hey Ephe it's Graffiti/Sasha/whatever lol...I retired from Rom, but before I left completely, I wanted to give you some help to help you grow as an artist. I think you're really good and have amazing potential, and would like to see you push yourself with each piece. Here is the main thing I would suggest: push your values further on each part, and push to define the forms of the characters/costumes more. I'll give you an example of what I mean; I d/l your Sel pic, and changed to b&w to check the values, and most of the values on the skin were the same, leading it to becoming "flat" or "muddy". I did a quick paintover the the whole pic adding some darks/lights in certain places, trying to add form and weight to those places, so it seems as tho it's all in space. I'll show you what I mean:
Here is before:
http://i619.photobucket.com/albums/tt277…a_bw_before.jpg
Here is after:
http://i619.photobucket.com/albums/tt277…ia_bw_after.jpg
I think you're off to a great start, and like I said, I think that you're a great artist, but I think that pushing your values in your pieces would help you out a bit. Don't take this as a negative crit, I'm just trying to help you become the best you can. Cheers