Needle felting is a technique in which, by means of a special needle, which has spikes, the wool fleece is compacted, achieving different shapes. By pricking with this needle, the fibers become entangled and in this way, there is less and less air inside and we will notice that it is more and more compressed and this allows us to shape it.
The best part of felting is that you only need imagination and patience.
If you need more inspiration here you can find wonderful pieces of art.