Making t-shirt patterns is a fun activity that even a beginning seamstress can enjoy. What could be more fun than making yourself a comfortable, personalized t-shirt from your own pattern?
Choose a t-shirt you love. This will be the base of your pattern, so make sure it fits you nicely.
Spray starch on your t-shirt and iron it so that it is completely flat and rather stiff.
Lay your t-shirt on the butcher paper or newspaper. Disregard the seams or unravel them. Your goal is to have five pieces of cut fabric; one each for the front and back, one for each sleeve and another for the collar. If you don't want to unravel your fabric, you can simply trace around it while it's attached.
Trace each piece of the t-shirt template on your paper. Stay as close to the original shape as possible.
Measure 1/2 inch past the edges of the fabric. This excess layer will allow you to sew along the lines made previously. When you're finished, you'll have a double outlined version of each piece of fabric, in paper form. This is your pattern, When you're ready to make your t-shirt, simply cut your chosen piece of fabric to the outer line of your pattern and re-assemble.
If your fabric is shifting and making it difficult to trace, you can pin the fabric to the paper.
Do not disassemble your favorite t-shirt unless you are sure that you have the skills to reassemble it properly.