This design is by OESD, pattern CC02609. Upsized to 5 x 7, 29088 stitch count.
Fabric used is from 123stitch: Fiddler’s cloth, 14 count, color Oatmeal
lady slipper closeup
lady slipper w frame no glass
Fiddler Cloth
Lady Slipper thread chart
Lady Slipper Threads