Lovely sampler. The model is stitched in Week Dye Works threads, but conversions to both DMC and Anchor are given.
The stitch count for this design is 51 x 149. On 16/32ct fabric with a 3" margin you will need a piece of fabric that is 9.5 x 15.5. It will fit comfortably on a standard 13 x 18 cut.