How to make the own fabric replacement slats for the blinds

I have 2" blinds from Lowes, probably the same one. Our windows had enough over hang though. If I recall, there are little metal rectangle boxes that get mounted / screwed into the top of the window, and then the the blinds slide into the little metal box to hold it in place. These little metal brackets have numerous holes in them on both the side, and on the top. I think there were four screw holes, one in each corner on the top, and two on the side. If this is indeed the type of bracket your blinds come with, then you would most likely be able to get three screws in place (1 side and 2 in the top). Then repeat that with the other side of the blind.

This should be more than sufficient to hold it in place. I think it would look a little funny though, I would probably go with a 1.5" for looks. But you could use a valance to cover it up and no one would even know.

I've been thru this, and option #1 is probably the best way to go. If you go with a company that specializes in blinds, you'll discover that there are many different types - some are translucent, others are designed to keep out all the light.

Having custom-fitted blackout blinds might be worthwhile, even if it's just for the bedroom. I don't know what you'd do for the skylight, though. Hopefully it's not in a bedroom.