"Proper" also varies from one jurisdiction to another, one geographic location to another, monasteries vs. local parishes. The good news is that, any of the forms should be acceptable. When I visit a place where most people do something differently than I do, I make sure not to be disruptive, but other than that, I stay with what I know rather than trying to copy some difference. That's just me. I'd think it more likely I might just get it wrong, when they will probably forgive me for being different.
The part that that confuses me is when approaching the Chalice. I make the sign of the cross when the person in front of me is receiving, before stepping forward, so as not to risk bumping the Chalice. Then I put my arms down at my side. But in some jurisdictions they cross their arms to show they are ready, while I have heard in some places they cross their arms to show they don't expect to receive and want a blessing only. Oh, and we don't kiss the Chalice, so that makes me nervous too. We don't touch anything (unless help is needed to hold the napkin) so there is less chance of spilling the Eucharist.
In our parish, most simply venerate icons by making the sign on the Cross, then kissing the icon. Others cross several times, do full metanoias, cross after wards, and so on.
One thing you should probably know about venerating icons, watch where you kiss them. It is appropriate to kiss the hands, the feet, the hem of a garment, the Scripture they hold. It is NOT appropriate to kiss the face. (At least that's what I've been strongly and repeatedly told). Also, look at the icon. Some depict scenes that might not be properly venerated at all. (But the ones depicting Christ, the Theotokos, Saints, or Holy Angels are appropriate.)