Now the tricky part! The continents shining in the night. The inspiration came from famous photo from NASA - see http://antwrp.gsfc.nasa.gov/apod/ap001127.html.
But simply copy and paste would be too.. well, simple! Let us be inspired by the photo but not rip it. So, in new document, select Freeform Pen tool, and with rough mouse movements draw a shape that resembles our continents. Remember to distort them, as they are located in a sphere.
Take all fractals that you used in the very first steps (to create stars in background) and paste them here again. As previously, set blend more to "screen" so that all fractals are seen through each other. Then, merge all fractal layers (Ctrl-E), and desaturate (Ctrl-U).
Now, delete all parts of fractals layer that are outside "continents shape" layer. There are 2 ways to do that. A) simply group these 2 layers
Now all you need to to is insert the result into our artwork, and set its blend mode to "color dodge"! Woo-hoo!
Now let's make the lines going from the earth with congratulation messages. Creating smooth line is a bit tricky but result is quite good. As always, create a new layer. Open Paths palette. On bottom of it, click New button to create new path (empty so far). Make sure this path is selected.
Switch to Pen tool (not freeform pen!). Draw a line with curved point in the middle (if unsure, here's how to do it: first point: click; second point: click, drag a bit, release; third point: click).