After I had a bit of play with the cover, I finally decide to use the PC illustration that I used for the animation as part of the CD cover. It looks more professional and tie with the animation. 

I am sooooo struggling to pick the right colour for the title 'How to stay safe on the internet'. I like white, but I think it would be easier if the background pattern is more subtle. 

Image X and Y.

Image Y - I tried to delete the background pattern behind the title and i think it makes the cover looks a bit empty.

Image X - lowed the opacity and it look nicer. I might use this one as the cover.

I use the same font throughout the animation, as well as the cover.

I think the cover will be more attractive if I use the foil technique (the white pattern)  in screen print workshop.