I make it a common practice to translate my favorite songs, so I figure I can help with this, too.
"it's alright [daijoubu]
take advantage of me
of my weaknesses
because you love it"
First, we have to rearrange the sentence into Japanese order:
"You it love because(translating to 'because you love it')
Me and my weaknesses taking advantage of alright is"
Now, we add in the particles:
"You
wa it
o love
de(because)
Me
to my weaknesses
no taking advantage of
mo alright is"
And now, translate the words:
Anata wa kore o daisuki de
Atashi/Boku(girlish 'me'/boyish 'me') to
Atashi/Boku no nanten no
Muchi ni juujite mo ii da
And a literal re-translation:
Anata wa(you) kore o(this) daisuki de(because you love)
Atashi/Boku(girlish 'me'/boyish 'me') to(and)
Atashi/Boku no(girlish 'my'/boyish 'my') nanten(weaknesses)
Muchi ni juujite(taking advantage of) mo ii da(is alright)
And if anyone would like to comment on this translation, please feel free.
And now, the second one. I don't know how to say 'like a' in Japanese quite yet, so I'm going to subsitute it with the word for 'this way':
"forged fragile
because I am replaceable
like a glass"
Japanese re-organization:
This way I can be replaced fragily forged because
And translation:
Kou de atashi/boku wa
Torikaerareru to dekiru to
Kowareyasuku de niseta
And finally, literal re-translation:
Kou de(in this way) atashi/boku wa(girlish 'I'/boyish 'I')
Torikaerareru to(replace) dekiru to(can do)
Kowareyasuku de(fragily) niseta de(because forged)
Hope this helps!