I have some metal roof panels we got for free that I want to use on a small coop we're building. I'll say up front I really don't know what I'm doing, but I'm trying to figure it out 
Is it a good idea to have plywood or some other underlayment under the panels?
How do I finish off the edges? I imagine they are going to be pretty sharp. This coop won't be very tall or very high off the ground (broody/silkie coop), so those edges are going to be bumped into I'm sure.
Is there a way to use this for the top hinged lid of a nest box too? I could always use wood, but it would be nice if it matched. Any tips or pictures of this?
Any tips on cutting them?
Thanks in advance for any help!

Is it a good idea to have plywood or some other underlayment under the panels?
How do I finish off the edges? I imagine they are going to be pretty sharp. This coop won't be very tall or very high off the ground (broody/silkie coop), so those edges are going to be bumped into I'm sure.
Is there a way to use this for the top hinged lid of a nest box too? I could always use wood, but it would be nice if it matched. Any tips or pictures of this?
Any tips on cutting them?
Thanks in advance for any help!