Triangle Square Heart

One or two felting needles Wool fiber Foam cushion or pillow[1] X Research source

Use straight pins to secure your shape down for an easier time. This will also relieve your fingers of getting stabbed.

Start with the body of a penguin. Form an oval shape. Create the head. Create a much smaller circle than the oval shape. Add in details using black wool such as eyes and maybe a mouth. Create the arms. To help you visualize penguin arms just think of them as little leaves. Construct two leaves that are smaller than the body, but bigger than the head. Attach the components in the same way you compressed these shapes together, by poking straight lines with your felting needle. [4] X Research source

There are plenty of different options online if you do not feel like constructing your own device.

Batting wool is ideal for creating sculptures. Roving wool is similar to batting, but it is better suited for thin shapes like ropes rather than wide sheets. Prefelt wool can be used as a clothing garment to your sculptures, but shouldn’t be used as any type of base.