Planned from French and wrote his name on it (8)
I believe the answer is:
designed
'planned' is the definition.
('design' can be a synonym of 'plan')
'from french and wrote his name on it' is the wordplay.
'from french' becomes 'de' ('from' in French).
'and' says to put letters next to each other.
'wrote his' becomes 'sign' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'name' becomes 'Ed' (short for Edward).
'on it' means one lot of letters go next to another.
'de'+'sign'+'ed'='DESIGNED'
Can you help me to learn more?
(Other definitions for designed that I've seen before include "Conceived and drew something" , "Planned or created" , "Intended; drew" , "Make a drawing or blueprint" , "Planned or conceived for a specific purpose" .)