As Gino said, PSDTuts pays people to write tutorials for them. So make a really good, your best one, and tell them about it. See if they'll accept and publish your tutorial. Getting on their site has got to give you some good traffic. Then you can take the money they gave you and use it on advertising your blog.
So even though your awesome tutorial won't be on your site, you'll get some good traffic and some good money from PSDTuts. And I'm pretty sure PSDTuts says you can publish your tutorial else where after a set number of days.
So that's what I would do. You get 3 things out of 1
