Galaxies Chords

Hi this is my first tab.And...this is my guess..i'm not good at guitar....maybe i need some earmates..lol.
and i need yr help to finish.
here's the part i guessed.
Chords
             Am     Gm      F
When you sing,
             Am     Gm      F
when you sing
        Am     Gm      F
The stars 
               Am     Gm      F
fill up my eyes
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And This Is How I Play
   Am    Gm     F
-------------------
-------------------
----X-----X-----X--
----X-----X-----X--
----X-----X-----X--
--X-----X-----X----
-------------------------
Chords
Am : 577555
Gm : 355333
F  : 133211