When you first start using a sewing machine, it can be disconcerting to see the fabric slipping away from the line you’re trying to sew on. Some beginners seem to think the machine will do the work for them, pulling the fabric into perfect alignment. Sewing is more like drawing with your needle and thread than pushing a button. To start sewing a straight line with an accurate seam allowance is the first lesson to learn. It is a fundamental to every garment, bag, or household project you will ever sew, so it is worth practicing early on to avoid struggles later.
Practice with a scrap of cotton fabric. Draw several straight lines on it with a pencil or piece of tailor’s chalk. These will serve as your guides as you sew. Place the fabric under the presser foot and bring the needle down at the beginning of one of your lines. Rather than looking at the needle, look ahead along your line. You will find this helps immeasurably to keep your line straight, as your hands will automatically guide the fabric in the direction you are looking. Start slowly and let the machine pull the fabric through at its own speed while you guide it with your hands. One of the biggest errors beginning sewers make is to constantly adjust the fabric in little jerks. This will result in uneven stitches and curving even when your line is straight.
If your seam starts to run off your line, don’t try to twist the fabric immediately to bring it back on course. Instead, stop your machine, lift your presser foot, and gently pull the fabric around until your line is back under the needle. This will help you maintain control and prevent your stitched line from becoming more and more crooked. Spend fifteen minutes each day to practice sewing along your lines on scrap fabric. Don’t try to make anything, just sew along the lines.
During the first few minutes, simply try to follow your lines. Then, try to maintain the same seam allowance by keeping the edge of the fabric lined up with a mark on your needle plate. In the final minutes, practice stopping and pivoting the fabric at corners so that your seam turns cleanly. After several days of this exercise, you will find your ability to sew a straight line has increased significantly. Your fabric will be feeding more smoothly, your corners will be looking nicer, and your lines of stitches will appear more even and less likely to waver all over the fabric.
This increased control is the first and most basic building block of all your future sewing projects. Your garments will hang better, your edges will align properly, and your pieces will go together without mysterious tucks and puckers. Learning to control your fabric and sew a straight line will transform your sewing machine from a bewildering mystery into a valuable tool for constructing beautiful works with fabric.