I have a pattern that has been a favorite of mine that is made just like this one (only different). It is a little confusing at first. After you get a few inches into it you can see what it is all about better. I actually started one a while back and laid it aside to do other projects. It is made of real fine yarn and takes a while to make.
The holes are not the seams, but are on each side of the 1 seam stitch at the junctions where each piece touches-front, sleeve, back, sleeve, front.