I took the original card apart and trimmed away the mat that didn't really match the thread the way I thought it did when I chose it in the middle of the night. Also, the focal piece sat a bit crookedly on the card base.
This morning, I used Un-du to loosen one corner of the entire piece and then removed it from the card base. I trimmed back the original mat so it no longer showed. I cut a larger mat from white cardstock and colored around the edge with a Tombow Marker that matched the thread. I like it much better now. It's ready to give away.
Spellbinders Layered Stitched Background Large Die of the Month, December 2021
Neenah Classic Crest Solar White 110-lb. cover cardstock (card base and stitched panel) Neenah Classic Crest Solar White 80-lb. cover cardstock (other layers) Distress Oxide Ink, Shaded Lilac (to ink the stitched panel) Marvy Marker, #8, Violet (to color the top panel) Tombow Marker, #676 (to color the mat) DMC Variations 6-ply embroidery floss, #4245, Mystical Midnight (three strands) Scotch 3M Mounting Tape (to attach the stitched panel to the colored mat) Flatback pearls