Meh, I was Tailoring/Enchanting until I got to level 36 and only had 3 gold. Decided I needed more money, so I switched Enchanting to Mining. I had 104 gold two days ago (down to 90 now :-P). Mining is great, especially if you know where to look for ore. The prices fluctuate, but they're always decent even when low.
Tailoring has not, up to level 225, made me any money. I lose a LOT. That might change now with my new Mageweave Bags; I can make them for 1 gold, 9 silver, and they sell at the AH for 2 gold, 25 silver (at least, that's what I see them for). But up until this point, very few of my tailoring items would sell; and I would have made a lot more selling the cloth. But I make my own armor, so I save some otherwise expensive purchases at the AH. Plus I can make my own blue items :-D