Create a new document 900x800 with a dark gray color (#131313), select the rectangular marquee tool and draw out a rectangle in the middle of your canvas.
Now add these layer styles to your rectangle.
Your layout should now look like this. (see link below)
Now search google images or your favorite stock photo site and find yourself a picture of a camera, copy & paste your camera image onto your canvas. Resize your camera image to site on top of your rectangle.
If you notice in the image above i have also added a drop shadow and a reflection. If you don't no how to do reflections then that's ok because i have already written a tutorial on how to do reflections. Reflection Tutorial
Now select your text type tool and type your site title/slogan etc.. at the top left of the rectangle, add these layer styles.
Your text should now look like this.
Now all that's left to do is convert it to your favorite blog software, a free blog is available from wordpress.com
Here is how it could look once converted.
More Tutorials: 
