>>10469165Yes, the dart is the triangular cut out shape. The sides of the dart are sewn together to create a round shape with a peak, like a breast shape. To stuff it, you stitch the breast piece down about 3/4 of the way around, start stuffing it, and then stuff and stitch little by little until you finish stitching it down. Ladder stitch is invisible when done correctly, unlike the big loopy black thread running stitches you used. Ladder stitch is used to close turning openings and to attach surface pieces like ears, tails, boobs, etc., because it's invisible when done correctly. Backstitch is used to sew seams together.
https://youtu.be/mZfb66Ng4wg 