What is the point of 6...c6? You find the right move one move later.
What is the point of 9...a5. a5 is a good square for your queen.
13...Qc7 what good does the queen do there? 13...Ba6 prevents O-O
14...Bb7 what does the bishop do there? You could have won a pawn with 14...Bxc5