Here’s the finished Cala Lily. I’m not loving the negative space. Thinking about peeling back the spathe and painting the amazing spadix or maybe some additional growth in atmospheric perspective. Just looked this up in my trusty Glimn-Lacy “Botany Illustrated”. This is actually not a Lily as the common name would suggest. It is in the Arum family, Zantedeschia Aethiopica is the scientific name, along with Skunk cabbage!
Cala lily is gorgeous! And congrats on your acceptance to the horticultural exhibit. That is an honor!