Reporting position in oceanic procedure

I am using PF3, and when i fly over the ocean i have to follow oceanic procedure. With MCE how do i get my FO to make the inital contact with Oceanic and what do i say to him so he will report our position when required.   

For the last to days, i have cross the atlantic from Gander to Shanwick twice, in both case I have lost ATC communication. I guess it is because i didn’t report my position when it was required.

Pierre