If your stripes aren’t straight when you cut, your whole garment is already off.
This is Step 4: Cut With Confidence, and stripes are a good one to learn on.
Problem is, fabric isn’t always cut straight when you buy it. Especially stripes. If the fabric is off, your hem will run uphill or downhill… even if your sewing is perfect.
So before you cut, stop trusting the fabric edge and check the stripe itself.
Line up key points in the stripe and follow it across the fabric. That’s your true “straight.”
Often knits are sold folded on the roll and can warp. That can shift the stripe completely off grain.
If you can, ask for a single-layer cut.
If not, assume you’ll need to correct it at home.
When it comes to marking I suggest tracing around your pattern with a soft pencil (like a 4B), chalk or a Frixion pen. (just know that Frixion pen marks can come back later, so that’s your call)
For this example, you’re only marking the outside edge anyway, nothing sits inside the finished garment.
Cutting isn’t just cutting, and taking time with fabric layout means setting your garment up to succeed.