Hi, my name's Tom. I don't do concept sketches. That may seem odd seeing as this is a concept art gallery and forum
Actually my taste when it comes to concept art is more in coloring them. I have been using Adobe Photoshop for 3 years despite the fact that I'm only 15.
truthfully I am a big fan of concept art. It really is great to get inside of what the developer's original ideas were for a game or a story or anything along those lines. Anyway, this forum looks like it's just starting up and looks great so far. All the art I've seen so far is extreme class in my book.
anyway here is some of my work, this was a concept made for unreal 2. Here is the original piece and the finished piece is at http://www.geocities.com/computerguy57/background.jpg you'll have to view it on geocities because my usual hosting is down for about a week. It wont work right away, if you don't know, just click the link then add a space to the address in the new window and hit enter to load the image.
my other works are photomanips and grunge work but I don't do those anymore because grunge became a trend that everybody did and it just wasnt fun anymore. Those are here: http://phalanx.deviantart.com
anyway, hope to see you around the forums and I'd love to color somebody's art sometime if they'd let me.