For the earlobe:
Cut an ear shape from cardboard. Glue polyfil to the bottom earlobe section and glue some polyfil around the ear canal to give it some shape. Cover and glue tan felt over this earpiece. Cut and glue a small black oval for the ear canal opening to the ear.
For the outer ear “groove”:
Cut a leg from an opaque tan nylon stocking and stuff it with polyfil. Knot the end to close it off and glue it around the outer ear.