Here are the steps to sew a seam:

1. Pin fabric with right sides together, aligning the raw edges and all notches.
2. Lift the presser foot, placing your fabric under the needle, and aligning the raw edge of the fabric with the guideline that corresponds to your seam allowance. This guideline will help you to sew straight and even.
3. Stitch 3-4 stitches forward, then backstitch 3-4 stitches to secure the beginning of the seam.
4. Stitch along the seam line, guiding the fabric with your left hand and keeping it aligned with the guideline.
5. When you reach the end of the seam, backstitch 3-4 stitches to secure it.
6. Trim any loose threads.

I hope this helps! Let me know if you have any other questions or if there's anything else I can help you with.

[Here]( is a link to a more detailed tutorial on sewing basic seams that you might find helpful.