This is a symbol chart to encourge crochet to read more symbol charts. The pattern only uses 3 stitches - chain stitch, slip stitch and treble crochet (UK)/ double crochet (USA)
You can experiment with different types of thread/ yarn and hook, I have tried this in .2mm, ribbon satin cord even plarn (cut up plastic bags) for a garden moth :) Size will change depending on the thread/ yarn/ material used