Room Decorating: City Skyline and Starry Night

I've recently painted the walls of my TV room and it was cheap, easy and really fun!
All you need is:

-Navy blue paint
-Black paint
-Glow in the dark stars

First I just painted the whole room and then I used a ruler and silver Sharpie to make an outline of a city skyline.

Then I painted in the outline with black paint.

Finally, I climbed up a ladder and stuck on glow-in-the-dark stars to show a starry night on the top of the wall!