On that type shingle it is REAL important that you use the proper starters. You cut 4-8-16" off the end of the shingle, if you are ending up with a small part of the tab, what side are you cutting off? For those type shingles they will only work if you follow the directions to the letter.
They look really nice, have a unique look, but I see more misapplied than installed correctly. Staircase them so you will get a better blend, don't run the whole course horizonal then start the next course. Work up the roof at a diagional.