When I went to your site, I couldn't find an "About" page or anything that introduces your blog and helps me understand what it's about, what you're trying to do, etc. I always look for something like that right away.
Also, the first impression is a bit confusing. The big, bold, dark, chunky Bueno header (and I know you can't change that) clashes with the red-flocked-looking wallpaper. So my immediate reaction is "Will this be a hard-hitting, powerful, no-nonsense kind of blog, or will it be a sensual, romantic blog to go with the bordello-style wallpaper?" The way it is, it puts out a kind of split personality. When the words, the theme, the presentation, etc.,all work together, the reader can quickly and easily see whether he/she "clicks" with your blog. If it's disorienting, the reader will likely bolt from the scene before even taking a bite of your posts.
You're off to a good start; now you might want to do some tweaking. The Forums and the Support section are jam-packed with good explanations of how you can make your blog your own and how you can create a test blog to play with theme choices behind the scenes.
And, BTW, Timethief has some very helpful posts about choosing WP themes, like: