What you are trying to do is still one of the easiest things… If you already have the profile used to create the roof (like in your first post) then you just need to copy the outside line a few times and push/pull. The boot could be a separate piece of (pre-formed) geometry that’s just stuck-on.
I still think you could do this in under 5 min… I’m going to try a slightly different method and see…
[edit] OK I timed it; 6 mins on my first run through. Could probably get it down with practice.eaves.skp (253.2 KB)