It looks like a very decent and nice design so far, though I cannot give better comments if I cannot see the whole layout with more words and buttons, etc.
Nevertheless, I think what you did to the background image overall was neat, and having background pictures within each box is pretty nice as well (but I need to see how they are with words on top, just to see if it will look cluttered).
I have a few suggestions (do not necessarily have to follow them, just my opinion =D):
1. For the boxes with the swirl image in the background, I think it's better to shift the white-looking parts to the edge of the boxes so that they do not look cut off. Furthermore, I just find the silver parts coming out of the box a bit distracting (doesn't blend well for me personally).
2. The black line in the middle of one of the middle boxes looks pixelated - is it completely straight?
3. For the boxes with RO characters sticking out, I prefer it if the extra parts are cut off. Or, at least move the swordsman down to cover the bottom edge of the outer box, just like the assassin character.
4. The black Facebook and Twitter buttons don't really match the design in my opinion, probably because of the dark colour. Maybe make it brighter to match the brownish colour theme you have going.
5. Really need to see where you will put the logo as well as its design to match the website layout
Keep up the amazing work! Can't wait to see the full version of this design ^^ and good luck!