Spot the mistake?

So today was the last tuesday before our digipak deadline and i printed out everything thinking i was FINISHED !!!! FINITO !!! DONE !!!

Then i came home, and uploaded the JPEG of my digipak

... THIS VERY JPEG file 

Can you spot what is missing from my digipak?

If not then , i'll help you ...

THERE'S NOTHING IN THE SPINE SECTION !!!

*screams*

Looks like i have to go back into college and edit that section .... and to think i was going to celebrate today #SIGH