Does anyone know how to make mod

please someone help us to make a mod
-infinite throwing knife
-only throwing knife(no meele too)
-just use modloader v1.1
-host host the game
please if someone know how to make o mod,help me to make thismod
U know,for practising throwing knife
Vly Vly thx

there is already a mod like this.

ok then close this ??