Okay, I'm going to try and explain one more time So no you won't be able to see the windows from the outside but that's nothing I can do for that since Sims don't actually allow skylights. The only way you can have skylights in your roof showing from the outside is by building them at the peak of the roof. Mine aren't there, or the right size anyways, so even if you did leave holes in the roof it wouldn't look right. Now obviously, every time you are going to have holes in your roof, you're going to have snow in your building. Also, like I said in the description of the item, my beams and ceilings don't match up with roofs, that means that the EA roof won't go low enough (on the long beams) to have a perfect lined up fit, so even if you did put in a glass roof or something, it would probably look really weird and more than likely not very pretty. Sadly again nothing much I can do while retaining the design of the items... EA has limitations.
Now, as you surely know, sims houses have levels, that you can go up and down on, the top level being the roof. IF you needed to take outdoor pictures with the windows showing, all you need to do is come down 1 level (but again probably won't look right since ceilings and roof don't match up.) And it is the same thing for indoor shots, simply go down 1 level from the top so you still have the roof walls but not the roof itself and from inside it will look perfect, you will see the ceilings and the skylights perfectly.