Let it be known; many techniques used in bonsai are not so easy as it seems. You need to know what species of tree and in many cases what variety of that species. Not all Junipers are created equal and the techniques used on a Juniperus Chinensis will kill a Juniperus Sabina, or Procumbens, or some of the native Junipers. Just because it is a Juniper does not mean you can treat it the same across the genus. If you have not found this information you have not looked hard enough. I have run accross it on Youtube but not in one place, you will have to do a lot of looking----I am not going to do your home work for you.
By the time you find this stuff out you may have matured enough in bonsai to be ready for this. You need to understand how the tree grows and that some of them have clockwise directional grain as they grow, and some have counter-clockwise growth as they grow. You need to work the wood according to the way it grew. As far as shari is concerned, understanding that this is work on the trunk, if you do not understand that some Junipers grow in general all over the place and others grow in segments related one to the other, these are reffered to a life lines, what you do may be a crap shoot if you manage to accidentally cut one of these. You could wind up with a lot of dead upper branches. Chinese Junipers grow and die from the outside in creating naturally the kind of dead wood you drool over. High desert Junipers die from the inside out and they create an entirely different element.
