Needle felting is begun by rolling up a small amount of wool and stabbing it with the needle.  When the wool is stabbed with the felting needle it pulls the wool into itself.  By stabbing the wool with the needle over and over while turning the wool it continues to pull wool in and the wool, with its tiny scales, locks together.  Continued stabbing and turning results in a firm round shape.  Once there is a basic shape to start with wool is added where it is needed to form a sculpture.

According to the fabric, needle felting classified as the following: Fiberglass, Nomex, Polyester, Polypropylene, PTFE, PPS, P84, etc.

Needle felting is the art of using a pointed needle to mat, press and interlock woolen fibers into felted cloth. To determine the best tools to use, you must decide what type of felting you will be doing, wet or dry. In needle felting, generally the dry method is used, as the metal needles can easily become rusted and ruined if used with water. Other important considerations in choosing the best supplies include selecting the proper needle for the job; finding high-quality, sturdy wool; and choosing the proper brushes for blending colors.