Applique's are easy. All it takes is a light punch.
Place the applique over the base fabric and pierce lightly with the Needle Felting Tool.
The fibers will become interlaced, attaching the motif to the fabric beautifully. (Repeated piercing produces a fluffy image of the applique on the reverse side of the fabric)
Felt sheet (50% wool content or more)
Natural felt (wool roving)
Woven wool fabric
Felt sheet (acrylic, etc)
Woven or knitted cotton fabric