The logistics are driving me nuts.

Sorry guys I can't sleep cause I have things outta order.
1.. Do I varnish before I put the hinge on the hatch? And to the roof?
If so: How exactly does one go about getting the hatch to stay where it should? If your alone that is. When the skin is on I won't be able to clamp it.
Suggestions greatly appreciated.
Thanks for answering my dumb questions
1.. Do I varnish before I put the hinge on the hatch? And to the roof?

If so: How exactly does one go about getting the hatch to stay where it should? If your alone that is. When the skin is on I won't be able to clamp it.

Suggestions greatly appreciated.
Thanks for answering my dumb questions