I close my frunk similarly, but maybe the only difference is that I say a little prayer to myself each time that it doesn't crease.
So far, works every time. Plus, I've done something a little extra to actively prevent a downward crease, see below.
One thing I've done is run a 3/8" thick piece of black closed cell sponge rubber weather stripping along the top of the chrome of the nose cone and another kind of I don't know what you call it type of weather stripping (it's a coil of self adhesive backed black silicon rubber tear drop shaped cross section) stuff along the leading edge of the frunk lid... so as when the frunk is closed there is zero air gap between the nosecone and lid.
This does 3 things.
1. It prevents rain spray and road grime entering and collecting under the frunk lid making the plastic surround around the storage area dirty.
2. It improves aerodynamic flow, no gap catching wind.
3. It provides a substantially force resistant mating surface between the frunk lid leading edge and what you're slamming it down on... was previously an air gap over the nose cone. Now, there's zero travel if you were to continue pushing down the leading edge it will be met by a solid force...
Maybe this has had something to do with my success of no frunk dent.
You might want to do similar for the other 2 reasons as well.
FWIW, the P85D red demo I tried for a day, had a crease with the leading edge bending downward. My "mod" would probably have prevented that. Should be a factory fix.
I also used several feet of the I don't know what you call it type of weather stripping (it's a coil of self adhesive backed black silicon rubber tear drop shaped cross section) stuff along many body panel gaps to make them more aerodynamically sealed. I will take a few pictures and open a different thread on that.