Cut out the components in yellow and brown

separate the un nessasery

begin to abb the components together 

I found using a blob of blu-tac helped with the fiddly bits 

Stick masking tap over the surface to keep the sections together then glue them from the rear.

i used super glue but you could also use solvent cement  

You are all done

I attached a pin badge to the rear to make him into a badge but you could also attach a magnet