adding sliced images to background

Hello!

I would like to know how how I can add sliced images into this theme. I have looked around but didnt find the proper solution to my issue.

Any suggestions is more than welcomed!

Thanks

EDIT: Also, how I can have a small number of posts showing on the front page.

Thanks again!

Hi, there!
You can specify number of posts per page in the option "Blog pages show at most" on page Settings->Reading in your dashboard.
Could you clarify your question about sliced images?