I get a lot of questions about blocking Summit, so the last time I did it, I took pictures.
I soak (and wash if necessary) the shawl, the spin most of the water out. I like to block it right side down, since the tendency for it is to curl backwards. I start by putting one pin at the corners and then pinning the short sides.
Then starting in the center I'll put one pin in an outside curve, then one half way between that one and the side, then continue until every curl has one pin.
Then go about adding pins until the curves are smooth.
That's it, really. It's not difficult, just a little time consuming.