This is how I make my Pony horns.
First I cut my pattern out and draw these 3 lines on the fabric
2. I sew over the lines. See that on mink the piles go downward. The stretch is horizontally.
3. I turn the fabric to the right side and place it on a piece of embroidery stabilizer. It enforces the stitch unto the fabric 
4. I satin stitch (zig zag on a high density) these lines.
5. I cut off the stabilizer to be able to fold/bend the fabric to sew.
6. I fold the horn and pin it down and sew .
7.I turn it inside out and stuff it
8.I sew it into a circle and pull on the thread to close it.
9. I place it on the pony head andsew it around in a circle ,until it is establish firmly and tie a not and cut it off.
This was a quick tutorial about how I make my pony plush horns.
Feel free to leave questions in the comment area.
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