Heres my input.
1. The structure/base isn't near thick enough.
2. Use Epoxy Resin rather than Polyester Resin.
3. Spend 10x longer on stretching the fleece perfectly, and 100x less sanding.
With those three pieces of advice your project would have came out much better.
Also spend more time laying things out and visualizing and you will end up with a much more balanced looking trunk set up.
more
= less
I was excited to see this project complete. I'm sorry it didn't work out. Just consider this practice. You're future work will turn out much much better if you learn from this project.