Take a large wick of red wool to form a square of about 15 x 15 cm.(photo 1)
And start stitching on a line in the middle of the square to consolidate the fibers.
Felting begins. This stitched area becomes flatter and harder.
Fold the wick in 2 and stitch in the middle as described in the previous paragraph (photo 2). Fold in half again (photo 3).
Then work the entire surface, staking all over to lightly join the fibers.