The most common and most likely answer to this crossword clue is the 9 letter word CARTOUCHE
I've seen this crossword clue in The Daily Telegraph
C
A
R
T
O
U
C
H
E
More clues leading to the result CARTOUCHE
- Scroll-like ornament needing attention outside area in Rugby
- Caution, about to handle inscribed tablet
- Old title holder's concern over rival
- Concern about rival in case
- Anxiety about pet in case of bullets
- Worry about pet in case of bullets
- Worry about a little container for firework explosive
- Decorative feature of vehicle I’ve hit!
- Bullet case, handle with care printed externally
- Border crossing contact is concern
Buddy explains!

The straight part
We know that "ornamental panel" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ornamental panel = cartouche.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CARTOUCHE mean?
CARTOUCHE noun- An ornamental figure, often on an oval shield.
- (Egyptian hieroglyphs) An oval figure containing the characters of an important personal name, such as that of royal or divine people.
- A paper cartridge.
- A wooden case filled with balls, to be shot from a cannon.
- A gunner's bag for ammunition.
- A military pass for a soldier on furlough.