How to surface slip stitch to attach:
Surface slip stitching is an excellent method for attaching straps to crochet garments, purses, bags, and more. This technique creates a secure, clean attachment with an aesthetically pleasing stitch line. You can either use a separate strand of yarn or, if your yarn end is long enough, use the yarn end itself for stitching (as shown in the video).
To start, mark the desired location for the strap attachment. You may choose to pin or clip the strap in place or use stitch markers to indicate the first and last stitch to be stitched through (as shown in the video). Slightly overlap the edge of the strap on the wrong side of your project. Then, use surface slip stitch to work through both the main project stitches and the strap's edge stitches. Finally, fasten off and weave in the ends!