How do i get my phone cover off?

old one?

Do you mean to say that your impression came with one installed? Or did you purchase it used from someone who had one on it?

Impressions don't come with one pre-installed....If you do have one on there and it's the hard plastic style, these usually have little tabs that secure it to each half of the phone.  Find one of these tabs and loosen it off the phone GENTLY.  Then continue along the edge until they all come off.  You just want to be careful with the initial loosening so that you don't overly tweak the two halves apart (That's bad, mmmkay?!)

If you have one of those 'gel' style sticky covers, most you can leave on under hard plastic ones; if not, check out the website that made it, you can usually find directions/FAQ there to help you remove them.

Good luck.