The top picture here is called wool roving, which is dyed wool that’s taken off a sheep, and that’s it. It can be pulled to pieces extremely easily and is hard to work with. The picture below, is what I make out of those fibers of wool.
How do I do this? I literally have to sit there and stab this wool for hours to get it to tangle into the shape I want, and if I over stab it, I can ruin my whole piece. You have to be patient with wool because of how fragile it is, and you can easily mess up. Your needle is also thin like a sewing needle and is about the same size as one, so imagine stabbing wool for hours with that little tool.