Drip Edge on Gable End

I am about to wrap up siding on a gable end. I will be using PVC 1" x 6" with a 1" x 2" over that for the trim. Somebody here in the forums suggested that I install a drip edge on the gable end while I am at it, which I assume goes over the 1" x 2". The builder never installed one. There are architectural shingles on the roof. Is there any suggestions on how to nail down the drip edge? The shingles are not as easy to bend back as a traditional three tab shingle so I am afraid that I will ruin them when trying to pry them back.