You're burning too much. Make a new layer and take a 200px soft brush (black) and brush the sides. Opacity: 50%. Then apply the image and try burning the sides then. That should prevent the pixels.
Grab your burn tool and burn the edges
Add the purple and orange gradient map and set it to screen 80%
Add a lens flare (for light adjustment) to the middle
Sharpen the entire image at 70%
Some lines of text are too long so they are knocked down making another line of text. I don't want that. So I'm messing with different fonts and sizes at the moment. These templates need to be perfect.