It is really not that hard to sew jersey knit fabric, and even to applique it, without any kind of fusible webbing whatsoever.
The Quick Way to Hand Embellish a Knit T-shirt – The Daily Sew
Steam A Seam 2 Fusible Web – Snuggly Monkey
Clover 700-G Quick Fusible Bias Tape, 1/4-Inch Wide by 11-Yard, Gold Lame
Create Unique and Beautiful Knit Garments with Appliqué and Embroidery – So Sew English Fabrics
How to do Fusible Applique or Raw Edge Applique Tutorial
Double sided temporary stick and Bonds permanently when ironed Sewing is not required but OK and Sew without gumming needle Fuse fabric, lace, ribbon,
Warm Company Steam-A-Seam 2 Double Stick Fusible Web-9X12 Sheets 5/Pkg (5517)
Just released - New and improved fusible web by The Warm Company
Bulk Buy: Warm Company (3-Pack) Lite Steam A Seam 2 Double Stick Fusible Web 9in. x 12in. Sheets 5/Pkg 5417
Dinosaur Applique Quilt Pattern Easy PDF Pattern for Beginners, Uses Quilt as You Go and Fusible Adhesive
Precut Applique Shapes Laser Cut Applique Kits & Shapes
Made by Me. Shared with you.: Tips Tricks and Techniques: Knit Appliques
Made by Me. Shared with you.: Tips Tricks and Techniques: Knit Appliques
How to Make an Applique (with Pictures) - wikiHow
Create Unique and Beautiful Knit Garments with Appliqué and Embroidery – So Sew English Fabrics
Jersey Knit Applique Technique