at the sart mute the song for the frirst 2 times

G------------------------------------------------
D------------------------------------------------
A------------------------------------------------
E--000-77777-333-10-10-10-10-10------------------

and the second time you play it add the bit at the end dont mute it

G-------------------------333--------------------
D------------------------------------------------
A------------------------------------------------
E--000---77777--333-10-10------------------------

then play the same as the first part just not muted and it should sound right
listen to the song to get the tming right