Trouble adding "dormer"

[rfcomm2k]

I have a remodel project that I want to have a fairly accurate drawing of the house before I start. I drew the basic floorplan and figured I would add in the "dormer" later. But now I cannot seem to figure out how to plug it in properly. Here are a couple photos of the front of house, and also a screen shot from HDpro with a couple colored shapes to represent things I am having trouble with.

As seen in the top right of image 2 you can just see the front porch area.

When I made the original drawing I included this porch as interior space, intending to go back later to cut the wall and change that footprint.