The most common and most likely answer to this crossword clue is the 3 plus 2 plus 7 letter word SET AN EXAMPLE
I've seen this crossword clue in The Daily Telegraph
S
E
T
A
N
E
X
A
M
P
L
E
Buddy explains!
The straight part
We know that "Do particularly well" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case do particularly well = set an example.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.