Hello,
I count the holes when doing plastic canvas. This particular design is done on 7 Mesh plastic canvas and the finished project size will be 10 3/4 x 14 1/4. So you would get your 7 Mesh sheet of plastic canvas and find where you want to start based on the sizing of the design and your size of canvas sheet and start stitching. There are many great tutorials online that are very helpful if you are just starting out or if you need some tips on how to get started. The design should give you a mesh size, the finished project size and a size mesh sheet to use.
~Kristi @ ECS