Make an impression in France and Switzerland (4)
I believe the answer is:
etch
'make an impression' is the definition.
(I've seen this before)
'in france and switzerland' is the wordplay.
'in france' becomes 'et' (I've seen this in other clues).
'and' says to put letters next to each other.
'switzerland' becomes 'ch'.
'et'+'ch'='ETCH'
(Other definitions for etch that I've seen before include "Draw on metal with acid" , "Carve into surface of something" , "Carve into surface, impress deeply" , "Engrave; fix firmly" , "Make a deep impression" .)