Instructions to follow prophet, holding image skyward (7)
I believe the answer is:
recipes
'instructions to follow' is the definition.
(instructions to follow to make a meal)
'prophet holding image skyward' is the wordplay.
'prophet' becomes 'seer' (I've seen this before).
'holding' is an insertion indicator.
'image' becomes 'pic' (I've seen this before).
'skyward' says the letters should be written backwards (in a down clue, letters go up).
'seer' placed around 'pic' is 'sepicer'.
'sepicer' backwards is 'RECIPES'.
(Other definitions for recipes that I've seen before include "Instructions for dishes" , "Pierces to find formulas" , "Directions for making a dish" , "Directions for making dishes" , "formulae" .)