
Tips to Sew Perfect Seams
Many people ask how to sew a straight seam; usually what they want is to learn is how to sew the seam allowance at a consistent width. Check out these 4 tips to Sew Perfect Seams!
Simple Definitions of Seam Line & Seam Allowance
First, let’s first talk about what a SEAM line is…A seam line is the line of stitching that holds layers of fabric together. There are many different types of seams, for now we will focus on the PLAIN SEAM with a standard 5/8″ seam allowance. (You can apply these steps to other seam allowance widths too.)
Next is the Seam Allowance…the seam allowance is the area of fabric between the stitching line and the edge of fabric.
4 SIMPLE Tips to Sewing A Perfect Seam
Be familiar with the guide lines on your sewing machine.
Use a sticky note or washi tape to make the seam allowance guide line, on your sewing machine, stand out and be more visible.
When stitching, keep an eye on the edge of the fabric and gently guide the fabric edge to stay even with your guide line.
Adjust your sewing machine speed to the slowest speed setting. A slower speed will help you to stay more in control of guiding the fabric.
Practice Stitching a consistent width seam allowance
First: Get your Basic Sewing Stuff .
Next: Grab a couple of pieces of fabric, match two edges of fabric together and pin pieces together.
Then: Insert the pinned fabric pieces to your sewing machine to prepare for stitching. Line up the fabric edge with your guide. As you start stitching, keep an eye on the stitching guide line, gently guiding the fabric-keeping the fabric edge on guide line.

Make sure your needle is in the correct position! (My needle has to be in the very most LEFT position to make my 5/8″ seam allowance guide line correct). Measure from your needle out to the seam allowance guide you need and make sure measurement is correct. Otherwise, you’ll be using your seam ripper. 😩

This post has affiliate links, and with your qualifying purchase I earn a commission at NO extra cost to you.
Sliding Seam Gauge
You can add seam line marks on your fabric for some extra visual help in keeping consistent seam allowances. All you need is a marking pencil or pen, tape measure, ruler OR a Sliding Gauge Tool.
Magnetic Seam Guide
If you’d like a guide with a taller side edge for the seam allowance fabric guide as opposed to Washi tape, you can try a Magnetic Seam Guide. PLEASE follow manufactures advice when using magnets with computerized sewing machines.
Practice Makes Perfect!
After you’ve practiced and are making pretty darn good and even seam allowances , you’ll be ready to learn about and sew other types of seams! Are you sewing curved seams, if so, be sure to clip or notch your seams when you are done!
Check out this simple pillowcase tutorial to practice your seams!
Thanks for reading and Happy Simple Sewing to you!
Amy
If you have questions or comments about this post email: amy@amyssewingstudio.com