I found tricks to do it ;p
luffy1255
luffy1255
luffy1255 ~> first of all, do it slow, secondly, bow your arm, then it will make about 2 bobbles, the one pointing inside you gotta use, very carefully
lu!èfrrfy1255 ~> I used to be better :s, you gotta pull up your underlip to your nose (not gonna work ofc, but just do that (try)) and then your chin is sharper : D