How to facetime from an itouch to iphone?

So the itouch already has facetime. And the iphone doesn't so i downloaded an app called facedial. So what do i do next?

If you want to talk to a friend with an iPhone you need to put their phone number in your contacts. Then you can open the facetime app and talk to them. If they have an iPod Touch or an iPad, you put their email in your contacts list and then open the app, click their name, and that's it! If they have their device turned off your phone will still ring until a certain amount of time and then say ___ was not available.

You will see your picture in a corner at the top to check and make sure you are in the camera range.
You can't leave voice mail.
If you hit the button with a mic and a line through it that cuts your mic and the person you are talking to can't hear you.
If you hit the button with a camera picture on it it will go to your other camera; they can see from the other side (if you wanted to show them your pet you would hit that button and they could see your pet and you can still see them).
If you hit your circle button on the bottom of your device you can pause the image and check your email or play an app will talking to the other person. NOTE: They will not see you and you will not see them until you hit resume Facetime.
The End button ends the call.