What are your practices?
Orthodox practice varies, but there are general common elements. We cross ourselves
1, At every invocation or mention of the Holy Trinity (by the names of the three persons that is), which happens many times throughout the services.
2. At the beginning of the Our Father
3. From one to five times during the Creed, depending on the tradition
4. At various points during the Anaphora/Consecration
5. When venerating,kissing, or being blessed by holy objects or icons
...OK, I'm quitting... this is going to take too long, since I'm still just on the sign of the Cross, and there's miles to go when that is done...
Ha! There isn't enough bandwidth available to catelog our liturgical gestures! We cross ourselves almost continually during prayer, certainly everytime the Trinity or Panagia is mentioned and generally three times each. We cross ourselves three times each at every "Holy God,+++ Mighty God,+++ Immortal God+++ have mercy on us. We cross ourselves in the Creed at "And in One, Holy, Catholic and Apostolic Church" +++, we do deep bows with arms crossed. We do full body prostrations during the Prayer of +Ephraim the Syrian. We do metanias, which is touching the floor and crossing ourselves. We of course kiss icons, the priest's hand, the crucifix, each other (X2 with the Greeks, X3 with the Arabs and Ethiopians). The Arabs especially pray the Our Father with their arms and hands in the "orans" position. The Ethiopians remove their shoes before entering the nave of the church. Want more? :)