Firstly I used the basic template to outline the shapes onto two different coloured papers for my nest and bird. I stuck with my little bluebird of happiness you will see.
Next, cut them out leaving a border around the pencil line (so you can't see the card template underneath when completed). Make one border slightly bigger than the other to enhance the 3D effect. If you want a neat back you can erase your pencil lines now.
You can see the beak here. I just eyeballed a couple of little orange paper triangles for these. Turn over your papers and glue down on to your card template (I just used a regular old glue stick).
Glue your second beak to the head (if you are doing a birdie too) and stick double sided mounting tape to your second set of pieces.
Stick them on top of the glued down ones and add a little eye (I used a black marker to dot one on).
Turn the whole thing over and add double sided mounting tape to the card template underneath.