On a scale of 1-10 how would you rate my singing (re-post with new video)?

I'm sorry, it wasn't very good, it was quite pitchy. Try a different song, Fergie's voice is almost that of a contralto, from what I heard you're a mezzo-soprano, possibly soprano, try singing songs sung by mezzo-sopranos, it will make a dramatic difference. A few examples of mezzo-sopranos, Rihanna, Gwen Stefani, Miley Cyrus. I would stay away from artists like Fergie, Lady GaGa, Mariah Carey. You might be able to sing in a soprano range with a little practice (just don't damage your voice by trying too hard), some examples of sopranos, Christina Aguilera, Celine Dion, Hayley Williams (she's from that band, I think it's called Paramore?).