Hi Betty:
We did these a couple of week ago at our needleword guild. Basically you cut a half moon shape out of fabric, fold in half (right side to right side) and stitch along the straight edge. Then you run two rows of basting threads along the open edge,(about 1/4 inch in) making sure to leave a couple of inches of thread hanging at the end when you've finished the stitching.. Turn the cone right side out and fill with your emery (or if emery is too expensive, get sharp sand from a hardware store). Take the dangling threads you left and pull to close the cone. Overstitch as much as you feel necessary to make sure the strawberry doesn't come undone. From green felt, cut a little leaf shaped rosette to hide the stitches. You can add a fancy braid etc.
You can choose different fabrics or do a traditional red strawberry - about the only caveat is that the fabric be a fairly tight weave so no emery will leak out. We used quilting fabrics.
Marg