This pattern is available for free on the NezumiWorld website
It is also available as part of an ebook with other charts here on ravelry.com as part of The Christmas Chart Collection (choose from American crochet terms and UK crochet terms) this is not free.

Use on its own or mix and match with other charts same style and size on the wbsite and in the collection ebook

Note:
The size of the finished piece will depend on the yarn used and type of filet stitch grid you make.
A No.10 thread and a 1 X 1 filet grid (1 post stitch & 1 block or space) will produce a much smaller square than using a worsted weight yarn and a 1 X 2 filet grid (1 post stitch & 2 blocks or spaces)

Use the hook required for the size of yarn/ thread chosen
Remember you could also use the graphs for tapestry crochet, beaded crochet, tunisian filet crochet, embroidery even knitting!