To start designing a glass vessel, fill the vase with a foundation medium such as oasis brick wrapped by clear plastic. Additionally you want to add glass pebbles at the bottom before you add the base medium then add pebbles at side of the container to hide the bottom medium. You also want to have your base medium is properly trim at the sides so that you have sufficient space when you are dropping your materials on the process. You also want to have a base medium higher than the rim of the container so as to work with a dome condition arrangement easily.
Once installation you can now get your florist scissors and add greenery by placing the stems as low as you can on the edge of the container completely covering the base.
Next step, you can start filling up your vessel with Geraldton wax with clean stem arbitrarily to create the dome shape that you want. Final step will be adding mini gerberas by starting on the centre and spreading out the remaining flowers to be able to completely symmetrical. Now you have a beautiful centerpiece that you can use to the occasions.