I don't know any of these.
Some have a great style, though.
I wikkied Adriana Melo, and assuming from that, the others can be found. So if you trust the name of the artist, go for it. The website is unfamiliar to me... who is the artist you wanted, you may want to do some research on them to see if they other means of being contacted. Or if you can contact them there, go ahead and test the waters with a brief request. Your artist might not even be free... good luck!
LJ
There is a particular comic book artist that I would like to commission for a specific artwork. The web site Comic Art Ink supposedly represents the artist in question. I have never commissioned artwork before, and before I send Comic Art Ink $$$, I would like to know if anyone here has had any dealings with them. Thank you!
@Celestial Lord and @Celestial Lord Too