Wire and Tape Method
The corsage is filling out nicely, alternating between flower buds, heads, green leaves, filler flower and loops of ribbon.
I'm using a slightly smaller flower head on the sides. I don't want to overwhelm the wearer of the corsage by just getting bigger and bigger. One or two larger flower heads is usually plenty in a standard corsage.
Because I've wired each bloom, I have more freedom to place exactly where I want each bloom to be in the design. Pressing the flower against the other taped stems lets them "stick" together slightly until I get them taped into place.
Here's a side view of the corsage. Notice the depth and definition on the front side, but that it's fairly flat on the backside to lay against the shoulder.