make a template.

cut out the 2 sections of the template in green and white felt,

2 green head sections
&
2 white face sections

[you can use any colour you like for the head]

cut out these 8 pieces in white felt,

4 white circles
and
4 white half circles

sew together the 2 face sections
and
the 2 head sections to the face

once all 4 pieces are sewn together
add some eyes with thread

sew on each circle 4 each side

[optional]
add a key ring with a few stitches at the top of the little mushroom.

then all done :)