double trunk

I'd like to air layer a part of this Acer P. but I'm not sure where. Should I: layer below the Y and make a double trunk, Layer the left or the right and leave the other, or Layer both above the Y There are some leaves below the Y so if I did 1 or 3 the tree should be ok. If I did 2, I could...

My first boxwood. I saw it sitting by itself and was totally drawn to it. I pruned off the top but puzzled on which direction I should take, 1 trunk or 2. For 2 trunk, I plan on cutting at the red line. Have the larger branches all lean towards the right. That vision makes me feel like a...