Here is an incredible tutorial by Naomi Rose on how to do perfect pleats with your tichel.  This tutorial is for the perfectionist in all of us!  She breaks things down so simply!

This tutorial teaches us the beautiful technique of layering and pleating.  Now you can get exactly the colors that you want showing where you want them!  As Naomi Rose says in the video, you can use the technique briefly in your regular tichel ties for a little detail, or you can be as perfectionist as you like!