I watched his sketching for a few hours, standing next to him. He carefully considered the position of the branches, as well as the size of the material. He also discussed the details with the owner of the tree. If he didn't pay attention to the position of the branches, the discussions with the owners wouldn't make sense.... since the discussions were about the position of the branches. He paid attention to the smallest detail.
Let's go to the examples on his web page where we have side-by-side photographs of trees and sketches of their futures.
http://www.peteradamsbonsai.com/clients.html
First tree listed:
http://www.peteradamsbonsai.com/clients/Doyle/Doyle.html
Look at how he manages to change the angle at which the already-dead left-side jin emerges from the trunk.
Second tree listed:
http://www.peteradamsbonsai.com/clients/Hilvers/Hilvers.html
My first thought is that he gets amazing growth out of the deadwood at the base. But then I realize I'm being unfair. He isn't ignoring details or growing deadwood, he's planning to glue new deadwood into the groove! Yeah, I know, it's not unheard of. But this does tree need it? Does it improve the artistic value (or commercial value, for that matter) of the tree?
Third tree listed:
http://www.peteradamsbonsai.com/clients/Kirk/kirk.html
I won't quibble with Peter's sketch though I'm not sure how much reduction relative to current growth habit would be needed to give the sort of ramification he has drawn.
Fourth tree listed:
http://www.peteradamsbonsai.com/clients/Jay/Jay.html
Measuring height from the base to the crook of the apical jin and width at the broadest point adjacent to the left-hand jin, the height:width ratio of the sketch is 6.7:1 whereas the height:width ratio of the actual tree is merely 8.6:1. Again, this is deadwood! How are you going to get that growth?
Fifth tree lacks a sketch.
Sixth link has two trees.
http://www.peteradamsbonsai.com/clients/An-Ta/AnTa.html. The first seems pretty good -- nice tree, too! The second tree and sketch has the same problem as above. The ratio of trunk height (measured to the first frontal jin) to width (measured above the nebari) has increased dramatically as we go from from the two real-life pictures to the sketch. Maybe it'll happen....but it sure seems optimistic to me!
But those are just the examples from his website. Go through any of his Bonsai Focus columns, look carefully, and see if you don't see the same thing.
That is not to say that Peter is not inspiring -- he certainly is both in person and in print. I can attest to both from first-hand experience. Nor is it to say that his sketches are not valuable. One can surely learn a great deal about artistic design by looking at what Peter would like these trees to look like some day, and to this end I have spent numerous hours with his various books, looking at his drawings. But given what I know of what is physically possible to do with bonsai, I have to view his sketches as efforts to capture the feeling that he'd like to see created by each tree, rather than a literal guide for where the trees can go.
-rw