Finally I added the words like you'd see in a VR game menu.

Added light and shading and some Sci-fi effects.

Added the flat colors. I prefer a darker, moody color pallete.

I polished my sketch and decided on some professions for the little girl. Digital artist being front and centre because its THU!

I sketched over my 3D Image

But I wasn't really feeling the composition. So I decided to go in a different route. Maintaining the same original idea I thought I could do a simpler comp...

At first I thought of showing some kids in a VR set and then the image transitions into a new unexplored world where they are transformed into different char...

When I think about 5G I think about the future, technology and virtual reality. So I decided to combine all of those in an image.