1. Glue all 4 sides together, with the vents opposite each other then use your 1.5" nails to fix in place.

2. Glue and nail the bars round the top inside of the roof so they are flush with the top of the roof and secure with 1" nails.

3. Make sure the roof is square, then use the drawing pins to fix the mesh over slots in the roof board.

4. Now turn the roof board over and fix to the frame you have created. make sure the vents are in line and then secure with 1" nails.

5. Place the metal over the roof board and fix into place using 1" nails, and your roof is complete!