RPG Feature: Appearance Assistance

My website: http://realmofzero.forumotion.com/
Forum Version: phpBB3

My problem consists in the Admin Panel >Modules > Roleplay Game >Fields Style
The problem more or less pretains to how /what type of coding I can use to edit these sheets, i've used images but can't seem to find the right one to fit into this http://realmofzero.forumotion.com/u1rpgsheet
Is there anyway I can put this image below in the entire background ?
 http://images.forwallpaper.com/files/images/f/f80c/f80c67f3/201671/texture-background-patterns-gold.jpg

If I cannot, what optional images may I use in recommendation for a Medieval Fantasy RP site ?

Two things.

1.) You say your forum version is phpbb3 when under your avatar if says phpbb2. Just making sure which one is correct.

2.) We can't see the RPG sheet as guests, can you make it so we can in order to see it? Either that or send a test account via PM? Thanks!

@Draxion

I've addressed the changes so that even guests may view it.
And I've also just checked, my Version is Phpbb3 despite what my image my be saying. It was modified at some point so maybe it doesn't show.

@Kurei Natsumori 

Are you wanting that entire image in the background of the character sheet?

Yes, I would like that as the entire background image.

Wait, you mean the entire site, or just when you view the sheet?

For the Character sheet, it's the only thing i'd like to change as a whole. Anyway it can be done ?

Hello ? anyone here that can help me?

BUUUUUUUUUUMP- O !!!!