Started Marking Back Door for Cutting

Today I got a start on marking the lines for where the back door will be cut from the inner skins.

First, with the outer skins still attached, I traced the outline of the back door cutout that outer skins provide.



With the outer skins still on, I put the back door cutout piece from the outer skins in place, to locate where I will do the cutting on the inner skins. I drew part of a box at each upper corner, then I removed the outer skins. I will extend the lines from the partial box the entire length of the skins, and these will be the lines that I cut on. (This will be clearer in my next update.)