Here are a few pics that might give you some ideas.
A spring loaded locking pin to hold it closed while traveling....
The two piece adjustable support arm with locking thumbscrew.....
A rubber bumper to help protect the front of the camper against vibration......
A view of the underside of the awning showing the extruded aluminum frame, metal reinforcing supports behind the fiberglass face.......
In the view of the bottom of my awning you can see the end of the hinge that is fastened to the front of the camper. That hinge is a two piece hinge that can be seperated for removal of the window cover. It also has a cover strip like the corners of the camper to help keep water our since all fastening screws will allow water penetration.
Good luck with your newest project.
jim