For detail work like this - take a digital photo of the section that you are working on -so you can tell where those skinny  leaf veins will be placed!  The seam allowances hide the numbers - so by taking a photo -you will know where they  belong.  Also, it will be necessary to use a sharp scissors and trim the exposed seam allowance at those points where they come together; we do not want any raw edges sticking out.  This is turned edge as we build.