Im a lvl 35 now and have my smithing up to 195. The first things that you make are useless in AH and are vendor trash imo. The fastest way that I found is to find another source of income and buy or mine the materials needed for leveling. I always work on the orange and yellow items because they almost always give you a skill point. Once you get up there, there are a few items that you can sell in AH. At lvl 175 I was making items like the Green Iron Hauberk that sells for about 9g, but costs almost that much to buy mats if you don't already have them. I believe that it is fairly costly to get up there, but very rewarding once you get there. GL