When using a sewing machine, it's recommended to use both the straight stitch and zigzag stitch while assembling all the pieces. After sewing, it's a good practice to
carefully inspect the stitches and hand sew any missed areas. For an even better result, consider hand sewing all the finishing touches.
Sew the side of zipper A to the front panel by aligning their edges with the corresponding edges of the front panel. Ensure that the right sides of the fabric are facing each other. Pin or clip the pieces together, then sew along the edges to join them.
Attach the bottom panel by aligning its edges with the top edges of the assembled front, zipper and side panels. Make sure the corners match up. Pin or clip the pieces together and sew along the edges to join them.
Before proceeding with the final step, it is advisable to attach any connectors you would like to include onto the connector pieces. This ensures that all desired connections are made before moving forward.
Finally, sew the back panel by folding the connectors in half and positioning them between the back and main panels, making sure any added connector pieces are placed inside the project. Align the edges of the back panel, ensuring that the corners match up. Pin or clip the pieces together and sew along the edges to join them.