Hello,
I have no experience in building .
I look at your pics
You are doing it very well.
For a one house floor it look like you thought about the right shapes for everything.
Bedroom ,ht room ,kitchen/bar , tv computer room....
I have a two floor house.
Only thing i could do later should be extand shape from Garden but it's a no no.
raising roof should be good.
Cause it's a room shape all in lenght it's not easy to create new rooms...
Enough talking of my house :p
INANE, Really nice work up there