If you don’t have another v-necked shirt, you’ll have to estimate how deep the V should be. In this instance, it’s better to start conservatively as you can always make it deeper. [1] X Research source You may want to try on the shirt to gauge how deep you want the V. While wearing the shirt, look in the mirror and mark the spot you’d like the point of the V with a pin.
Flip the shirt over and repeat this step on the other side.
If you don’t have a seam ripper, you can use a sharp pair of scissors to carefully cut it away. Stop at the shoulder seams. Unless you don’t plan to re-attach it to your new neck-line, leave the collar attached to the back of the shirt.
If you didn’t plan on creating a hemmed collar, your new shirt is done.
The rough edge of the collar should be paired with the rough edge of the t-shirt, with the edge of the collar facing the outside of the shirt.
Make sure the thread in your sewing machine matches the color of the shirt. If you don’t have a sewing machine, you can also hand sew the sides of the collar to the sides of the V.
