This first step is easy; find a picture that suits your needs and would be good as a background. It's better to make them square.
Step 2: Get a Good Photo Editing Program
For my logos, I used GIMP.
Here's a link to download it: www.gimp.org/ ----Don't worry....It's free
*Sorry For The Tiny Picture*
Step 3: Edit Your Picture Any Way You Want It
Now, you edit the picture to give it those artsy effects like in my logos. For example, i added color to mine to make the splatter skull turn purple. You can also add special elements, like a flare or a motion blur. This effect gives your logo some spice.
Step 4: Add a Title to Your Picture
Now, you add a title with your user name and make it a cool looking font and color. Then, you merge the two layers together to make one.
Step 5: You're Done!
After all of that, you can add a lot more cool effects. And that's all folks!