Gather all ingredients before starting arrangement

In this case, I used a fairly large large (10x10) low container so I needed 2 blocks of oasis (plus a little in the middle) to fill the container. The center piece was to go on a square 60x60 table so it had to be quite large

The flowers were green and white mums and the greens were leathery/shiny green leaves

Start with filling the container with water until the oasis has absorbed all the water without overflowing, then start adding the greens, starting in the corners

Once the corners have been established, add the green mums, again mostly in the corners, and now, add the white mums to fill in the gaps,

Stand back and look at the arrangement for balance, insert a few more green mums where you may see holes.