Sketch Of How My House Will Hopefully Look When I Have Built It

This is just a VERY rought draft of how I would like my cottage to eventually looks like.
Somehow or anyother I am going to transform this...

Into this...

Slight bit of a challenge, especially as I will have to cut new sizes for the doors/windows.  But also raise some of the internal walls inside so that the roof can sit comfortably on rather than just slip off, which it tends to do a lot...
I was also thinking of putting some beams inside the cottage, but not loads and loads else it would look like it has been infested by them!