Step 5: Sewing and Stuffing
Now it's time for the fun part! Stuff the toy until it feels right. If you're using polyester fiberfill, pull off small pieces and push them into the top and bottom of the toy first. If you want the toy to be firm, keep pushing bits of stuffing in until it feels right, and then put some more in. (It will tend to squish down over time, especially if the toy is hugged.)
If you're using beanbag filling or other material, be creative.
When the toy is stuffed, close the opening using a ladder stitch (which will hide the stitches) or a whip stitch (which will display them.