Steps in field: too much going over shoe (8)
I believe the answer is:
stiletto
'shoe' is the definition.
(type of shoe)
'steps in field too much going over' is the wordplay.
'steps in field' becomes 'stile' (steps letting people climb over a fence in a field).
'too much' becomes 'OTT' (short for over the top).
'going over' says the letters should be written backwards.
'ott' written backwards gives 'tto'.
'stile'+'tto'='STILETTO'
(Other definitions for stiletto that I've seen before include "Thin high heel" , "Type of shoe" , "Small dagger and high narrow heel" , "Long dagger" , "Dagger; tapered heel" .)