Paint the foam cones orange. This is so the white foam won’t peek through the yarn.
Wrap the (dry) painted cones in orange yarn, using hot glue as the adhesive. I think this is fairly straightforward, but you can see me do this in the video above if needed.
Create the carrot tops from green felt.
Attach the tops with hot glue. Now you can hang these carrots to a garland, wreath, or however you’d like to decorate with them.