Enlarging a design.  Firstly, a hexagon which is elongated.  It's interesting to see whether the shapes tessallate or what shapes are created if they don't.  Secondly, designs from Margaret Pascoe's book, "Blackwork Embroidery: desgn and Technique".  The right-hand image shows pattern repeats, the left-hand the pattern being enlarged (with some imperfections in the copying).