Knock off any corners etc on the wood or whatever.
Avoid pressure where edges of plastic hits/folds and similar issues.
If the plastic get hot or not... corners hit small points for long term could cause problems.
Plastic can warp where wood hits the plastic or areas are "heavy" w/o being attach to the car. Then can find very hard to remove any damage later.
Is sim to many front faces "droop" problems on the car for many people.
Often that's sign of missing/damaged parts holding them allowing more load aggravating the problem.
quick example...
My 87 notch front was pulled down for years because PO removed plastic and metal parts on the bottom of it.
That also cause radiator problems because missing panel force air to that.
Replacing missing parts help but permanently warp the top and edge flange where meet the hood.
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave