In this Instructable I'm going to show you how to make a "Aura Effect" using Adobe Photoshop CS3. It is possible to do this in nearly any version of Adobe Photoshop, the process just might differ slightly.
First I will show you the tools that we're going to be using, which we will need the Gradient Tool, and the Pen Tool.
Step 1: Selecting and Using Your Gradient
Select your Gradient Tool and clicking on the Gradient Color Settings on the top menu, pick the colors you want the background to be. For what we're doing here, I usually stick with colors close to the same side of the color wheel, of different hues.
For this instructable I choose a deep purple blue fading to a blue teal.
Start from bottom to top with your Gradient, and as long as you HOLD SHIFT the Gradient will stay straight all the way up the page.