Downside Up

In a poem downside up is where I should start
But a zenith really belongs at the top
It's a journey that brings joy to my heart
Here at the end's beginning I won't stop
Turning to colors of silver and zinc
With the softest of ease the big blimp stirs
The airship begins to gradually sink
As I fly over the ziggurat of Ur
I'm keeping warm in furs of zibeline
Feasting on fresh zucchini and zwieback
I see the views of zoysia ever so green
Looking down at the ground past the tarmac
Adorned in colorful zinnia I ascend
Like a zealot I'm flying this zeppelin
Everything in the beginning is the end
If I see a world upside down I'm stepping in
Let me start...