Mihawk failed to hurt Luffy??

http://2.bp.blogspot.com/-xciRcq2BaMg/V4QfqAHQuaI/AAAAAAAA1lU/WE6Vn5mg3ksZk0j0nvKMFiP7ecefEvyoACHM/s16000/0561-003.png

First thing he did