How to make a symmetrical triangle arrangement

Bevel the edges and secure the oasis with the anchor tape

Stick the leather leaf in the oasis to make a triangle

Then fill the empty spaces with leather leaf maintaing the triangle

Then take the larkspur and make a triangle with those and then put one in the front

This is a bad picture but you would make steps with the standard carnations going left to right tallest to smallest

After staggering the standard carnations you then place mini carnations were you feel nesseary than button mums

Then you add baby's breath to the arrangement then your done