Jealousy

hmmmm....not really poetry I would say. I would take out the I'm after the first and maybe leave the last. And I don't think the color change of happy works. Seems more a distraction. Try this

I'm jealous of your smile,
your laugh.
I'm jealous that you are skinny,
and I'm fat.
I'm jealous that your family has money,
but mine doesn't.
Because you get everything,
and I get nothing.
You don't have to work,
You look like a supermodel,
Your family loves you,
but mine doesn't.
I'm jealous cause you have pretty eyes,
I'm jealous cause you have perfect hair
You have a perfect life,
but I have nothing to live for.
I'm jealous, I'm jealous, I'm jealous,
But most of all I'm jealous
cause your happy!!

Sacrilege changing your work, I know, but my way of suggesting. Not bad, though.

From your picture, I can testify that you most certainly do not look like a crayon