your quilt looks absolutely wonderful nothing wrong with it or your seams I started quilting years ago with Mary Ellen Hopkins teaching and the book "It Is OK To Sit On Your Quilt" and her method was called PPM personal private measurements and it always worked I made a lot of sampler quilts that way the only way it does not work is if you get involved in a block exchange and then I have found that hard for not everyones blocks comes out the same size finish your quilt and enjoy it is beautiful