My name is ron matt (not ron amtt) tried to change that but couldn't. Anyway, I'm kind of new to SF art, but I've got a few things on DA
http://ronmatt.deviantart.com/gallery
I work almost exclusively in Photoshop but use ZBrush, Bryce and Illustrator for textures and vector elements. All composition, color and blending is in PSCS
Please check it out and comment, good or bad. I don't have thin skin
Thanks RM