English make an impression with beheading sovereign (7)
I believe the answer is:
empress
'sovereign' is the definition.
(empress is a kind of sovereign)
'english make an impression with beheading' is the wordplay.
I cannot really understand how this works, but
'english' could be 'e' (abbreviation) and 'e' is located in the answer.
'make' could be 'press' (pressing is a kind of making) and 'press' is found in the answer.
A single letter 'm' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for empress that I've seen before include "She rules over many territories" , "Female sovereign" , "She rules over vast territories" , "Queen Victoria was one" , "Female ruler" .)