The Scottish Thistle is the first in a series of downloadable designs that are exclusive to this website. This design reflects the history and colour of Scotland. I have designed over 600 designs for many tapestries since 2010. Building up experience on how create design for stitch. 
If you wish to stitch this drawing, trace the line drawing onto a piece of linen, then stitch. Simple!
For more guidance https://www.andrewcrummy.com/downloadthistle