A while ago we bought some polystyrene eggs from Hobbycraft, having seen a programme on Create and Craft in felting them, and these are my two attempts.
Both eggs were needle felted, and then I washed them in hot soapy water, rolled them slightly and then rinsed off in cold water (so a bit like wet felting).
When dried for the one on left I cut out some flowers with a marianne die and some freehand leaves. Although I used stick-backed felt, the flowers didn't really stick, so glued them on with some matte accents, stuck on some gems for centres, and made a bow and loop which I pinned on with a fancy head pin.
For the beaded one - I started with a double ended thread and made the centre four pearls, then threaded on seed beeds and did the strands. Again a bow and loop added (different colours) and pinned on with fancy headed pin. To help keep the beads in place, I also pinned the strand of seed beads at the bottom of the egg with a fancy headed pin.
I am thinking I might make some more beaded flowers and glue them on to the egg, and possibly add some random pearl gems to it too.