I apologize - I did this project without taking pictures, so I had to take pictures recreating the process. A little imagination will be needed for this post...
Whereas, in the previous scarf project no sewing was needed, this one does require it.
To begin, a square scarf is needed. They work best because you can easily measure strips from this shape.
Using a ruler, measure equally-sized strips. Depending on the desired length and width, 2 or 3 rectangular strips will work well.
After measuring and marking the strips, make your cut.
To attach the strips together, a serger works the best, but of course if you don't have access to a serger, a regular sewing machine will do. (The benefit of the serger is that the raw edges and seams will be taken care of at the same time. After the strips are all sewn together, using the serger along the sides of the scarf will also ensure that the edges will not frey.)
The end result will be a generously long infinity scarf to wear in many different ways.
~Beaucoup de Bisous~