I would like to replace some elderly Lombardy poplars with some pleached trees. I've not attempted anything like this before, and would appreciate your advice. This picture shows our drive, folk enter on the left, and exit on the right. I want to remove the Poplars on the right, and create an effect so that as you drive in [i.e. left-to-right of picture] your see "through" the pleached trees to…