Cutout the body shapes from the felt, leaving a 1cm gap around the pencil marks
You'll be sewing along the lines you traced, so you need to leave enough space otherwise things will come apart
Cutout a piece for the mane from the other felt
You'll want to fringe the mane and shape it to your own taste
Pin the two body shapes together - sandwiching the mane in-between - with the pencil marks lining up and visible on either side
Pay attention to how you pin the mane - it needs to end up the right way round when everything is turned inside out
Start at the top of the back leg, sew around the legs to the top of the horse's bottom (above where the tail will be)
The other end of a pencil may be needed to push the legs and head the right way out
Again the other end of a pencil may be useful here
Cutout a piece for the tail from the same felt as the mane
Again you'll want to shape the felt to you own taste
Fold the edges in as you sew to make it tidy
After tying off thread, instead of cutting the loose end off, sew the thread through the body to the other side. On the other side cut the thread off and let in go back into the body, so you can't see the stray end.