Icon corners, I think, can be done just about any way you want. For instance, the only place in my room where I could put one up is a) not in a corner and b) facing West. I'd prefer East, but it's the best I can do, and I don't worry about it. I don't have all that many "actual" icons, so I have some prints on the walls for the time being, and the nicer prints I am progressively buying frames for. I have a table that I have set up similar to an altar (candles, cross, etc.) in front of the wall. Some of the "actual" icons are on the table, most are respectfully displayed leaning on the front of it, and one is on the Eastern wall. It's steadily grown in prints; I'd like to get more real icons, though, and start putting nails in my wall and hanging them up, but we'll see (can't put holes in the wall yet). The important thing is not how you set it up (to an extent, it is an individual thing), but that you do, and you pray there.