Katy Perry - Pearl chords

standard tuning- i think that thease are correct but it is my first chords that i 
added and i did it all by ear so yah... :)

Pearl- Katy Perry

[Verse 1]
Am
She is a pyramid
         Dm 
But with him shes just a grain of sand
     Em
This loves too strong like mice and men
          F
Squeezing out the life that should be let in

Am
She was a hurricane (cane-cane-cane)
    Dm
But now shes just a gust of wind
            Em
She used to set the sails of a thousand ships
      F
Was a force to be reckoned with

[Pre-chorus]
          F
She could be a Statue of Liberty
          G
She could be a Joan of Arc
         Em
But hes scared of the light inside of her
      Am
So he keeps her in the dark

C       G            Am       Em
Oh, she used to be a pearl oooh
C        G                Am       Em
Yeah she used to rule the world, oooh
      C             G        Am       Em
Cant believe shes become a shell of herself
C         G            Am    Em
Cause she used to be a pearl

[verse 2]
Am
She was unstoppable
     Dm
Move fast just like an avalanche
        Em
But now shes stuck deep in cement
        F
Wishing that they never, ever met


[Pre-chorus]
          F
She could be a Statue of Liberty
          G
She could be a Joan of Arc
         Em
But hes scared of the light inside of her
      Am
So he keeps her in the dark
[ Tab from: http://www.guitaretab.com/k/katy-perry/243647.html ]
C       G            Am       Em
Oh, she used to be a pearl oooh
C        G                Am       Em
Yeah she used to rule the world, oooh
      C             G        Am       Em
Cant believe shes become a shell of herself
C         G            Am   
Cause she used to be a ...

[Bridge]
                 Em                           Am
Do you know that theres a way out, theres a way out
          Em                        Am
Theres a way out, theres a way out
                  Em               Am              
You dont have to be held down, be held down
            Em           Am
Be held down, be held down

[Chorus]
C       G            Am    Em
Cause I used to be a shell
C       G            Am          F
Yeah, I let him rule my world, my world, oh yeah
C                 G               Am               Em
But I woke up and grew strong and I can still go on
C      G              Am
And no one can take my
Em
Pearl
C         G            Am      Em 
You dont have to be a shell … nooooo
C          G              Am           Em
Youre the one that rules your world … ooooh
C                  G                 Am                Em
You are strong and youll learn that you can still go on
C          G         Am 
And youll always be a
Em
A pearl

Am
She is unstoppable