Another option you may want to consider is using freezer paper - you use an iron to make the paper adhere to fabric, fold the paper and sew *right next* to the fold, and at the end of the piecing you just peel the paper off. So absolutely no ripping of paper and possibly having some bits of paper stuck in the seam to deal with. Another benefit is that you can reuse the freezer paper about six times before it stops adhering to fabric, which is very nice if you are paper piecing the same block/unit many times
You can find more information about all the details of paper piecing by doing an internet search for: foundation piecing with freezer paper
There are a lot of videos and web sites that explain the process well.