I can only say what I do... I pray standing, unless my back begins to stiffen up (I have back problems), which signals that pain might follow if I don't take it easy. I face east if I can. Regarding icons, don't forget that you can print icons out and use them if you want. I tend to pray softly aloud, as it helps me not lose focus, and also reminds me that Orthodoxy is not just a mental or intellectual thing, but involves the whole human person; and also that it involves not just thinking something, but communication between a person and God, with the entire Church being (in some small way) impacted.