When we designed the wall frames, we started by inventorying the windows we had and figuring out where they would work best to maximize southern sunlight. Beyond that, we followed rules about headers and stud placement. To make the wall frames, we cut 2x6 boards on the chop saw and assembled them with screws.
<gallery class="center" mode=packed heights=400px150px>
File:NorthWallPlan.jpg|North Wall
File:NorthWestWallPlan.jpeg|North-West Wall
</gallery>
<gallery class="center" mode=packed heights=350px150px>
File:NorthWallPicture.jpg|North Wall
File:NorthWestWallPicture.jpg|North-West Wall