For Scouts and Explorers just give them the instructions and leave them to it. The younger sections will need some guidance.
Print out the template rooster onto very thick paper or thin card. If this is not possible use a greyscale printout as a template to draw round (depending on the size of your group you may just need a few templates to share that the children can pass round
If you are using the greyscale rooster get the children to colour the pieces in red and gold before they build the model
Print out the directions
Children can share