How to make a symmetrical triangle arrangement

Sink oasis and press into a standard round dish

Bevel edges and fastening anchor tape across the oasis, diagonally

Place leather leaf in 3 sides of the oasis and two pieces back to back in the back

Fill in more space with leather leaf

Put larkspur in the front, two sides, and back of the oasis

Create a Step down line with standard carnations and start filling in with mums

Add some larkspur

Start filling in some of the spaces with mini carnations

Fill in all the leftover empty spaces with gyp