You might want to try John Flynn's website. I bought templates from him and a book, though haven't used them yet. The way you do it is to sew normal pieces together straight, then there's some technique to sew parts of each piece at an angle and use the template to make them the right shapes... I can't explain it well but it looks much easier than anything I've seen before.
Or, if you like English Paper Piecing, they have pieces for DWR