Dale - it got lots of good feedback. it is not finished, but was campable.
I will be adding kwila (hardwood decking timber) flashings around doors and as a rubbing strip along the sides. There will be aluminium strips running 125mm high along each side as well (prob propellor or checker plate). This will be bent 50mm underneath as well to aid with weather proofing.
Teardrop Nanny- Thank you