ok we will be making something along the lines of this


Ok first open up a new document as shown:


Use the name as your username
The size should be around 500 X 100
and leave the rest

Right now get your brush tool out



 and start brushing with a brush set called "pure abstract" download it Here

Brush until something like this



Then swap colours to a dark purple and go over the blue:


It may look messy but it will look good after

Now get some white and brush over it



It makes kinda a glass feature.

Then all you have to do is add some text

Enjoy 

Do you use Photoshop?Because its better to explain what program this tutorial is for.

Its photoshop, thanks for the comments