How to kiss a turian

I'm not sure how they kiss,
sometimes I wonder if Shepard kiss Garrus' face,could he feel that?
maybe had other ways to instead of that...:\
but anyway,they are still the best couple in Mass effect.;D

====update====
Okay,like you guys said,turians kissing others with their forehead.

Enjoy it.;D

Shepard,Garrus(c)Bioware