The butterflies are made of a bullion knot for the body, 2 heartshaped buttons for the wings, a bead for the head and straight stitches with french knots for the antennae.
I added straight stitches on the seamtreatment to add a little contrast. For the branch I couched the green thread on with embroiderythread in the same color.
The branch on the left is too heavy. I have to correct that.
The whole block seems to tumble to the left, but I'm sure that will change after the embroidery is finished.