Our first trick will be adding glittered text to your cover using Pixlr.
Here are the steps-
Step 1: Open Pixlr Editor. (duh)
Step 2: Open an image, create a canvas, whatever and type in and design your text. Make sure that you're happy with the colours and fonts because you won't be able to change them later.
Step 3: Rasterize the text layer. [Go to the layer, right click, and rasterize OR in the menu bar - Layer- Rasterize Layer.)
Step 4: After rasterizing it, go to Filters - Noise. Once you go there, a box will pop up, in which you can adjust the amount of glitter our text will have.
And, voila! You've done it!