Aside from some spelling mistakes it seems pretty good. I would have used different word choice to make the song less literal, but that's just me. Maybe you were going for literal.

I loved this line:
shes stuck on the wall, flat and silent, but shes still a talker
I also liked this one:
if she moves from that pose, cosmo might drop her
But I think you should change this one:
theyre growing armies of barbies and i think we should leave her
"Growing" and "leave her" kind of stick out as not belonging there.

You have some good stuff there, keep working on it.