Cut out all the components 

In the file I have assigned contrasting colours to components for positioning

begin adding the components together as shown in the picture.

The positioning is quite straight forward if you use the main picture as reference

Use super glue or solvent cement to join the components together.

Don't try and to it all at once - its much easier to join the components one at a time

The face is the most tricky part as the components may be small 

I used tweezers which really helped

I added a magnet to the rear of mine to display on my refrigerator to I know who to call