Buttonhole stitch shells pattern

How to do a buttonhole stitch (from shells pattern). #buttonholestitch #embroiderystitch #learnembroidery Materials Needle number 5 DMC embroidery thread (3 strands) Fabric canvas cotton Pilot frixion heat erasable pen Website: https://wolfratsen.com/ Instagram:   / wolfratsen   Etsy: https://www.etsy.com/nl/shop/wolfratsen