Great stuff, Focus-Ak! The template technique is very cool.
The HDPE (root barrier) roll plastic that I used on Slambo's upper grille block (
https://youtu.be/RVzra5e4rpc ) buckled from the heat of the summer sun. Hopefully the ABS plastic that you used will be more resistant!
I want to rework mine before the cold weather sets in. The plan is to wrap it with a composite fabric, possibly a Kelvar weave.