Butterfly Cross-stitch :) I would clean up the edges on them with 1/4 & 1/2 stitchs though.
Butterfly cross stitch chart
Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/191965240/patchwork-butterfly-cross-stitch-pattern
Butterfly cross stitch pattern free ~ **I have an idea how to incorporate this for "Plastic Canvas**
Butterfly cross stitch pattern free
Cross stitch border
Cross stitch pattern PDF - Butterfly on the flower